Journal of Musculoskeletal Trauma

Postoperative sagittal alignment and reoperation predict late outcomes after plate fixation of AO/OTA 33C distal femur fractures: a retrospective cohort study: Hee Gon Park; J Musculoskelet Trauma 2026;39(3):216-226. Published online July 24, 2026; DOI: https://doi.org/10.12671/jmt.2026.00073

Abstract PDF: Background
Intra-articular distal femoral fractures are associated with high complication rates and variable late outcomes. Although the AO Foundation/Orthopaedic Trauma Association (AO/OTA) classification system is useful for describing injury severity and anticipating complications, whether fracture subtype alone determines clinically relevant late outcomes remains unclear. This study aimed to evaluate postoperative complications and late outcomes following plate fixation of intra-articular distal femoral fractures and to identify factors independently associated with final clinical outcomes.
Methods
This retrospective cohort study was conducted at a regional Level I trauma center. Patients with AO/OTA 33C intra-articular distal femoral fractures who underwent plate fixation and were followed for at least 12 months were included. Radiographic parameters reflecting coronal and sagittal alignment were assessed using standardized measurement methods. Postoperative complications and reoperation were recorded as intermediate events. Clinically relevant late outcomes included final knee range of motion (ROM), leg length discrepancy, and radiographic osteoarthritis severity, assessed as the difference in Kellgren-Lawrence grade. Multivariable linear regression analyses were performed to identify factors independently associated with late outcomes.
Results
The 33C3 group (n=33) had significantly higher rates of open fracture (54.5%), nonunion (39.4%), and reoperation (45.5%) than the 33C1–2 group (n=49). At the final follow-up, 33C3 fractures were associated with lower mean ROM (P<0.001) and greater osteoarthritis progression (P<0.001). However, multivariable analysis showed that sagittal malalignment (Δ anatomical posterior distal femoral angle: β=−2.35, P=0.001) and reoperation (β=−17.5, P=0.001), rather than AO/OTA subtype itself, were independent predictors of final ROM.
Conclusions
Although fracture subtype according to the AO/OTA classification was associated with predictable complication patterns, clinically relevant late outcomes following intra-articular distal femoral fractures were more closely associated with postoperative alignment quality and the treatment course than with fracture classification alone. These findings highlight the importance of optimizing radiographic alignment and preventing complications that lead to reoperation to improve long-term outcomes after plate fixation. Level of evidence: III.

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Clinical and radiographic outcomes after surgical treatment of supination-adduction type ankle fractures in older (≥65 years) and younger (<65 years) patients: a retrospective single-center comparative study in Korea: JungHo Lee, Bawoo Ko, Hongik Choi, Jun-young Lee; J Musculoskelet Trauma 2026;39(3):236-244. Published online July 24, 2026; DOI: https://doi.org/10.12671/jmt.2025.00374

Abstract PDF: Background
Supination-adduction (SAD) ankle fractures involve a vertical medial malleolar fracture and potential tibial plafond impaction, but pattern-specific evidence in older patients remains limited. We compared postoperative complications and clinical/radiographic outcomes between older and younger patients and explored complication-associated factors within the older group.
Methods
We retrospectively reviewed 51 patients who underwent surgery for SAD-type ankle fractures (2010–2020): 30 younger (<65 years) and 21 older (≥65 years). The primary outcome was a composite of surgical site infection, loss of reduction, or delayed union. Functional recovery was assessed using Olerud-Molander Ankle Score (OMAS) and American Orthopaedic Foot & Ankle Society (AOFAS) scores through 12 months. Union and posttraumatic osteoarthritis were assessed radiographically at ≥18 months. Preoperative dual- energy X-ray absorptiometry was performed in older patients for exploratory analyses.
Results
Postoperative complications were higher in the older group (38.1% vs. 10.0%, P=0.035). In older patients, diabetes mellitus was associated with complications (odds ratio [OR], 9.17; 95% confidence interval [CI], 1.15–73.24; P=0.037); smoking was not (OR, 5.50; 95% CI, 0.71–42.60; P=0.103). At 12 months, OMAS and AOFAS scores did not differ significantly. One older patient developed nonunion, and posttraumatic osteoarthritis occurred in one patient per group. Lower T-scores (mean, −2.3±0.5) correlated with greater tibial plafond impaction depth (3.1±1.2 mm; ρ=−0.46, P=0.036) and showed a borderline significant correlation with articular step-off (2.0±0.8 mm; ρ=−0.43, P=0.052).
Conclusions
Older patients had higher postoperative complication rates than younger patients, although 12-month functional and late radiographic outcomes were comparable. Diabetes was associated with complications, though the small sample warrants cautious interpretation. Findings support careful perioperative optimization and individualized fixation based on fracture morphology and bone quality in older patients, especially those with diabetes. Level of evidence: III.

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Open distal radius fracture with ulnar neurovascular injury treated with dorsal spanning plate fixation and vein interposition grafting: a case report: Kyeong-Eon Kim, Ho-Yong Lee, Shin-Woo Lee, Ji-Sup Kim; J Musculoskelet Trauma 2026;39(3):262-268. Published online July 20, 2026; DOI: https://doi.org/10.12671/jmt.2026.00164

Abstract PDF: Open comminuted intra-articular distal radius fractures with associated ulnar neurovascular injury are rare; furthermore, these injuries are challenging because skeletal stabilization, arterial reconstruction, nerve assessment, and soft-tissue coverage must be coordinated. We report the case of an 80-year-old female patient who presented after a fall from stairway with a severe open distal radius fracture and a volar-ulnar distal forearm wound. She reported numbness and tingling in the ring and small fingers, with a cold sensation and delayed capillary refill. Imaging showed a severely comminuted intra-articular distal radius fracture (AO/OTA type 23-C3). Emergency surgery was performed within 6 hours. First, a dorsal spanning plate was applied, and the small volar lunate facet fragment was fixed with a volar lunate facet plate. After debridement of the injured ulnar artery, a segmental defect remained and was reconstructed using a reversed basilic vein interposition graft harvested from the ipsilateral proximal forearm. The contused but continuous ulnar nerve was treated with neurolysis. The soft-tissue defect was managed with an acellular dermal matrix and negative-pressure wound therapy, followed by staged full-thickness skin grafting 1 week later. At 1 year postoperatively, bony union was achieved, and the functional outcomes were satisfactory. Level of evidence: V.

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Progressive forearm instability after anatomical union of a radial head fracture: a case report of a challenging Essex-Lopresti injury: SeongJu Choi; Received April 6, 2026 Accepted May 26, 2026 Published online July 20, 2026; DOI: https://doi.org/10.12671/jmt.2026.00157 [Epub ahead of print]

Abstract PDF: Essex-Lopresti injuries remain challenging because anatomical restoration of bony structures does not always re-establish functional forearm stability. We report the case of a 51-year-old male patient who sustained an elbow dislocation, comminuted radial head and neck fracture, and distal radioulnar joint (DRUJ) dissociation after falling from a bicycle. He underwent open reduction and internal fixation of the radial head, interosseous membrane augmentation using a suture-button construct, and temporary DRUJ pinning. Immediate postoperative radiographs showed apparent restoration of radial length, and radiographic union of the radial head was achieved. However, ulnar-sided wrist pain initially improved but progressively recurred by 6 months, with increasing ulnar-positive variance and DRUJ widening. Elbow motion was preserved, but forearm rotation was limited, and computed tomography demonstrated heterotopic ossification around the radial head. Ulnar shortening osteotomy and radial head arthrolysis were performed as a second procedure, after which mechanical instability developed, with irreducible anterior dislocation of the radial head. A third operation, consisting of annular ligament reconstruction using a palmaris longus autograft, restored proximal radioulnar joint stability, although substantial limitation of forearm rotation persisted. This case highlights that even radiographic union and multistructural initial management may fail to restore balanced forearm mechanics in Essex-Lopresti injury. Level of evidence: V.

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Open reduction and internal fixation for distal humerus fractures in older adults: a retrospective comparative study by osteoporosis status: Tong Joo Lee, Hee Beom Shin, Yongseok Lee; J Musculoskelet Trauma 2026;39(3):227-235. Published online July 15, 2026; DOI: https://doi.org/10.12671/jmt.2026.00101

Abstract PDF: Background
Distal humerus fractures in older patients, particularly those with osteoporosis, pose substantial treatment challenges because of increased fracture complexity and compromised bone stock. Open reduction and internal fixation (ORIF) is the preferred treatment but may be complicated by fixation failure. This study investigated the outcomes of ORIF in older osteoporotic and nonosteoporotic patients with complete articular distal humerus fractures.
Methods
This retrospective study included 19 patients with Arbeitsgemeinschaft für Osteosynthesefragen/ Orthopaedic Trauma Association (AO/OTA) 13C distal humerus fractures who underwent surgical treatment between 2012 and 2024. The mean patient age was 79.1 years. Patients were divided into osteoporotic (n=11) and nonosteoporotic (n=8) groups based on the lowest recorded dual-energy X-ray absorptiometry T-score at the femoral neck or lumbar spine. Osteoporosis was defined as a T-score of −2.5 or lower, and the nonosteoporotic group included patients with osteopenia. All fractures were treated with ORIF using bicolumnar plating. All included patients completed 12 months of clinical follow-up for visual analog scale (VAS) and Mayo Elbow Performance Score (MEPS) assessments. Radiographic follow-up was recorded separately and continued until union was confirmed; imaging follow-up extended to 12 months or longer in 14 patients and was limited to 6 months in five asymptomatic patients after confirmed union.
Results
Both groups showed significant within-group improvement in pain, as assessed using the VAS, and function, as assessed using the MEPS, over time. Between-group comparisons at each follow-up time point showed no statistically significant differences in VAS or MEPS. No radiographic nonunion was observed during the available imaging follow- up, and complications were limited to one case of screw pullout/loosening and one case of postoperative stiffness.
Conclusions
ORIF provides reliable outcomes for older patients with complex distal humerus fractures, regardless of osteoporosis status, when stable reconstruction is achievable. These findings suggest that ORIF remains a viable treatment option, with satisfactory functional recovery and low complication rates in this population. Level of evidence: III.

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Fixation with two headless compression screws and a distal-radius bone graft for proximal scaphoid nonunion with dorsal intercalated segment instability deformity: a report of three cases: Seonjeong Lee, Won Sun Lee, Jae Kwang Kim; J Musculoskelet Trauma 2026;39(3):252-261. Published online July 7, 2026; DOI: https://doi.org/10.12671/jmt.2026.00136

Abstract PDF: Proximal scaphoid nonunion is difficult to treat because the proximal fragment is small and biologically compromised. Secure fixation can be especially challenging when dorsal intercalated segment instability (DISI) is present and requires correction. We report three male patients with proximal scaphoid nonunion and DISI deformity who underwent volar fixation with two 2.4-mm headless compression screws and cancellous bone graft harvested from the distal radius at the Lister tubercle. Preoperative computed tomography confirmed a proximal nonunion line and proximal fragment dimensions considered sufficient for dual-screw fixation, and magnetic resonance imaging showed no definite avascular necrosis. Early postoperative computed tomography showed maintained fixation and alignment in all three patients. Although CT-confirmed union at final follow-up was not uniformly available, radiographic union defined on plain radiographs was achieved in all cases without loss of alignment or carpal collapse. Carpal alignment improved in two patients, but DISI persisted in one. One patient underwent secondary removal of a preexisting loose body and one screw. This small case series suggests that dual-screw fixation with cancellous grafting may be technically feasible in selected proximal scaphoid nonunions with concomitant DISI. Level of evidence: V.

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Radiocarpal subluxation after volar plating due to an insufficiently supported dorsal key fragment: a case report: Yeongyoon Koh, Kanghun Yu, Jong Woong Park, In Cheul Choi; J Musculoskelet Trauma 2026;39(3):269-274. Published online July 3, 2026; DOI: https://doi.org/10.12671/jmt.2026.00185

Abstract PDF: Distal radius fractures are commonly managed using volar locking plate fixation, which provides stable fixation in most cases. However, certain fracture patterns involving dorsal key fragments may not be adequately stabilized with a volar approach alone, even when intraoperative reduction appears satisfactory. We report the case of a 58-year-old male patient with a complex intra-articular distal radius fracture involving a dorsoulnar corner (DUC) fragment. Preoperative computed tomography revealed a dorsal fragment associated with subtle dorsal radiocarpal subluxation. Despite this finding, the fragment was considered amenable to fixation through a volar approach because it was relatively large. Although satisfactory reduction was achieved intraoperatively, early postoperative imaging demonstrated progressive dorsal radiocarpal subluxation due to displacement of the DUC fragment, while overall alignment parameters remained preserved. Revision surgery with additional dorsal buttress fixation successfully restored stability. This case highlights the critical importance of recognizing dorsal key fragments and achieving adequate dorsal support during fixation, as failure to provide sufficient support may result in delayed instability despite acceptable initial reduction. Level of evidence: V.

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Current concepts and applications of internal fixation for forearm diaphyseal fractures: Sung Yoon Jung, Min Kyun Cho, Dong-hee Kim, Sang Hyun Lee; J Musculoskelet Trauma 2026;39(3):205-215. Published online July 3, 2026; DOI: https://doi.org/10.12671/jmt.2026.00087

Abstract PDF: Adult diaphyseal fractures of the forearm functionally behave as intra-articular injuries because forearm rotation depends on accurate restoration of length, axial alignment, rotation, and the native radial bow. This narrative review summarizes contemporary surgical options for adult forearm shaft fractures, including 3.5-mm plate osteosynthesis, dual mini-plate fixation, interlocking intramedullary nailing, and minimally invasive plate osteosynthesis (MIPO). Compression plating with 3.5-mm plates remains the reference standard for most fracture patterns, whereas other techniques should be regarded as selective, emerging, or salvage options according to their indication spectrum and evidence base. Mini-fragment dual plating may be useful for short segments or thin soft-tissue envelopes, although the supporting clinical evidence remains limited and meticulous biomechanical execution is essential. Interlocking intramedullary nailing is a viable alternative for carefully selected simple fracture patterns or soft-tissue-compromised situations, offering less invasive exposure but a narrower indication spectrum. MIPO may be considered for selected comminuted or soft-tissue-compromised diaphyseal fractures; however, its use in adult forearm fractures remains constrained by the high functional requirement for precise restoration of length, rotation, and the radial bow. To improve transparency, this review explicitly distinguishes established, evidence-supported methods from techniques supported mainly by limited retrospective data or institutional experience. A pattern-based pragmatic algorithm and expanded comparison table are provided to guide fixation selection according to the bone involved, fracture location, fracture morphology, soft-tissue condition, and evidence tier while minimizing complications such as nonunion, infection, nerve injury, refracture after plate removal, and radioulnar synostosis.

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Biomechanical analysis of medial distal tibial locking plate fixation for distal-third spiral tibial shaft fractures: Yao-Jen Liu; J Musculoskelet Trauma 2026;39(2):140-146. Published online April 10, 2026; DOI: https://doi.org/10.12671/jmt.2026.00094

Abstract PDF: Background
Distal spiral fractures of the tibial shaft present fixation challenges, particularly in patients who are not suitable candidates for intramedullary nailing. This study evaluated the biomechanical stability of medial minimally invasive percutaneous plating osteosynthesis (MIPO) under various physiological loading conditions.
Methods
A finite-element model of a distal AO/OTA 42-A1.1c spiral fracture of the tibia was created using computed tomography data. A precontoured titanium medial distal tibia locking compression plate with nine locking screws was simulated. Material properties were assigned to cortical and cancellous bone. The loading conditions included axial compression (750 N), varus/valgus bending (300 N at a 9° offset), and internal/external torsion (7.5 N·m). von Mises stress and fracture displacement were analyzed.
Results
Axial loading produced a peak plate stress of 508.06 MPa and a displacement of 2.17 mm. Valgus and varus loading generated stresses of 490.17 MPa and 324.08 MPa, respectively, with corresponding displacements of 3.86 mm and 2.01 mm. External and internal torsion resulted in stresses of 354.23 MPa and 358.9 MPa, respectively, with corresponding displacements of 2.64 mm and 2.22 mm.
Conclusions
Medial distal tibial plating demonstrated favorable biomechanical performance in this finite-element model; however, clinical extrapolation should be made cautiously. Level of evidence: V.

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NSAID-induced suppression of type X collagen and VEGF expression in the early phase of rat femoral fracture healing: Maria Zafar, Rana Mohammad Zeeshan, Safia Tasawar, Muhammad Saad Ilyas, Amer Aziz, Uruj Zehra; J Musculoskelet Trauma 2026;39(2):162-173. Published online April 10, 2026; DOI: https://doi.org/10.12671/jmt.2025.00367

Abstract PDF Supplementary Material: Background
The current literature presents conflicting evidence regarding the effects of nonsteroidal anti-inflammatory drugs (NSAIDs) on fracture healing. This experimental study aimed to evaluate and compare the histological and immunohistochemical changes during femoral fracture healing in rats treated with a nonselective cyclooxygenase (COX) inhibitor (diclofenac sodium) and a selective COX-2 inhibitor (celecoxib).
Methods
Thirty-six male Wistar (standard outbred) albino rats weighing 200–400 g underwent standardized mid-diaphyseal femoral fracture surgery. The animals were randomized into three groups (n=12 per group): group 1 received diclofenac sodium, group 2 received celecoxib, and group 3 served as the control group and received 1 mL of distilled water orally once daily. Six rats from each group were euthanized at the end of the 2nd and 7th weeks after fracture for sample collection. Histological examination was complemented by immunohistochemical analysis, and the expression of type X collagen and vascular endothelial growth factor (VEGF) was assessed using the immunoreactive score (IRS) method.
Results
Healing scores were significantly higher in the control group at both time points (2nd week, P=0.01; 7th week, P=0.03). At the 2nd week, rats treated with diclofenac sodium demonstrated significantly greater fibrosis (P=0.01), and by the 7th week, they exhibited impaired bone formation (P=0.003) along with increased bone defects (P=0.01). IRS values for type X collagen and VEGF were significantly higher in the control group than in both treatment groups during the 2nd week (P=0.01 and P=0.005, respectively).
Conclusions
These findings suggest that, in this rat model, NSAIDs, particularly nonselective COX inhibitors, may disrupt the early phases of bone repair by affecting hypertrophic chondrocyte differentiation and reducing angiogenic activity. Although these results indicate a potential risk to optimal healing, they are preclinical observations, and their relevance to clinical fracture management should be interpreted with caution. Level of evidence: V.

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Combined acetabular and pelvic ring injuries: a reference-frame algorithm for definitive fixation sequencing: Jeong-Hyun Koh, Seungyeob Sakong; J Musculoskelet Trauma 2026;39(2):83-92. Published online April 9, 2026; DOI: https://doi.org/10.12671/jmt.2026.00031

Abstract PDF: Combined acetabular and pelvic ring injuries are not simply “two fractures in one patient.” Reduction and fixation of one component can alter the alignment and reducibility of the other, rendering operative sequencing a primary decision variable rather than a secondary consideration. These injuries typically result from high-energy trauma, frequently occur in patients with polytrauma, and are further influenced by physiological tolerance and the feasibility of available operative corridors. The existing evidence base remains constrained by retrospective study designs, inconsistent definitions, variable classification systems, and heterogeneous outcome reporting, all of which limit the strength of comparative recommendations. This state-of-the-art review presents a surgeon-facing, algorithmic approach grounded in a reference-frame mindset. We emphasize computed tomography (CT)-based mapping and the use of consistent terminology to characterize acetabular morphology, pelvic ring instability, deformity vectors, suspicion of mechanical coupling, and feasible operative corridors. Mechanically connected acetabular and pelvic ring injuries (MCAPI) are introduced as a working framework for identifying patterns in which reduction or fixation of one injury predictably influences the other. In cases of suspected MCAPI, a posterior ring-based sequence is generally preferred, typically consisting of posterior ring reduction and fixation, definitive acetabular reconstruction, and subsequent anterior ring fixation. We propose an explicit intraoperative “GO/NO-GO” checkpoint (reference acceptable, stable, corridors feasible) to prevent acetabular reconstruction on a moving target. Acetabulum-first strategies may be appropriate only in selected anteroposterior compression- type configurations in which acetabular fixation plausibly restores sacroiliac congruency and posterior stabilization remains technically feasible. We summarize key outcome domains and complication patterns, highlighting hip dislocation as an important risk factor associated with both neurologic deficits and overall complications. Standardized CTbased definitions and outcome instruments, together with multicenter cohorts employing predefined decision pathways, are required to test sequencing strategies and to determine whether improved radiographic reduction translates into durable functional benefit.

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Successful reconstruction and functional recovery of a pediatric medial malleolus defect in an 8-year-old girl using autologous iliac crest bone grafting in Korea: a case report: Sung Yoon Jung, Dong-hee Kim, Sang Hyun Lee, Ki-Hun Kim; J Musculoskelet Trauma 2026;39(3):245-251. Published online April 8, 2026; DOI: https://doi.org/10.12671/jmt.2026.00059

Abstract PDF: An 8-year-old girl presented after a traffic accident with a severe crush and degloving injury of the medial right ankle and foot, a distal tibiofibular fracture, and medial midfoot bone defects. After staged irrigation and debridement with temporary external fixation, definitive reconstruction was performed on August 6, 2016. The medial malleolar defect (2.5×2.0 cm) was reconstructed using a contoured autologous iliac crest bone graft secured with internal fixation, and medial stability was augmented using harvested gluteal fascia as a deltoid ligament substitute fixed with suture anchors. A bone-cement spacer was placed adjacent to the injured physis to mitigate physeal bridging, and the extensive soft-tissue defect was covered with a free anterolateral thigh flap and skin graft. During follow-up, progressive varus deformity and contracture were managed with corrective osteotomy and plating, Achilles tendon lengthening, Z-plasty, and Ilizarov fixation. At the final follow-up (March 6, 2025), the limb-length discrepancy was 5 mm, active ankle dorsiflexion was 0° (passive dorsiflexion 5°), and the patient was pain-free with full participation in daily activities, including hiking and dancing. This case emphasizes the value of an integrated staged strategy that combines bony reconstruction, medial stabilization, physeal management, and durable soft-tissue coverage during skeletal growth. Level of evidence: V.

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Percutaneous anterior leverage technique for anteromedial cortical support in intertrochanteric femur fractures: a computed tomography-based validation study: Whee Sung Son, Bum Jin Shim, Oog-jin Shon; J Musculoskelet Trauma 2026;39(2):117-129. Published online March 27, 2026; DOI: https://doi.org/10.12671/jmt.2025.00311

Abstract PDF: Background
Anteromedial cortical support (AMCS) enhances stability in intertrochanteric femur fractures. However, reproducible, validated methods of achieving AMCS have not previously been reported. This study introduces a percutaneous anterior leverage technique and validates its AMCS effects using computed tomography (CT).
Methods
We retrospectively reviewed patients treated by a single surgeon between March 2022 and December 2024. The inclusion criteria were an AO/OTA classification of A1–A3, application of the percutaneous anterior leverage technique, available pre- and postoperative CT, and ≥6 months follow-up. Outcomes included CT-based AMCS (anterior on axial and medial on coronal images, classified as positive, neutral, or negative), time to union, union rate, changes in neck-shaft angle, and treatment failure (varus collapse, blade cut-through, or nonunion without the former two). The risk factors for failure were analyzed.
Results
Of 273 patients reviewed, 53 met the inclusion criteria. Follow-up was at least 6 months in all cases. Positive anterior support was achieved in 37 patients (69.8%) and positive medial support in 42 (79.25%). No patient demonstrated negative anterior support; one (1.9%) had negative medial support. Cortical support improved significantly after surgery. CT images demonstrated significant postoperative improvements (anterior P=0.026; medial P<0.001). Bone union was achieved in 50 patients (94.34%) at a mean of 3.93±1.48 months. The mean change in the neck-shaft angle at last follow-up was 1.75°±2.34° varus. Three patients (5.66%) experienced treatment failure. Anteromedial cortical breakage during follow-up differed between failure and nonfailure groups (P=0.002), but regression identified no independent predictors. No technique-related complications were observed.
Conclusions
Our percutaneous anterior leverage technique produced favorable CT-confirmed AMCS and high union with low failure, supporting its safety and effectiveness in intertrochanteric femur fractures. Level of evidence: IV.

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Definitive fixation for traumatic pelvic ring injuries: a dynamically informed, posterior-referenced framework: Jeong-Hyun Koh, Seungyeob Sakong; J Musculoskelet Trauma 2026;39(2):73-82. Published online March 24, 2026; DOI: https://doi.org/10.12671/jmt.2026.00045

Abstract PDF: Optimal definitive fixation for traumatic pelvic ring injuries remains challenging because static radiographs and computed tomography, although essential for defining morphology, do not consistently predict load-dependent behavior during early mobilization. This uncertainty contributes to substantial practice variation and continued reliance on simplified displacement thresholds, such as the 2.5 cm rule. Such rules can misclassify instability by underrepresenting posterior competence and by privileging static measurements over functional behavior. In this narrative review, we propose a dynamically informed, posterior- referenced framework composed of three linked elements: (1) decision-linked terminology that explicitly distinguishes dynamic instability, radiographic change, and clinical failure; (2) selective stress-based assessment when uncertainty is likely to alter management; and (3) escalation along a fixation continuum that weighs incremental stability against operative burden. When static imaging cannot establish posterior competence with confidence, we outline selective stress-based approaches to assess pelvic ring behavior and to translate demonstrated instability into fixation selection along a defined continuum. Across all steps, the framework emphasizes minimum necessary fixation and explicitly incorporates the cost of selection as a primary decision variable. The operative question, therefore, shifts from gap width alone to clinically relevant motion and preservation of posterior competence. In doing so, this approach aims to reduce both undertreatment and overtreatment and to improve the consistency and defensibility of definitive fixation strategies across diverse practice environments.

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Nonoperative management of distal radius fractures: when and how?: Shin Woo Choi, Jae Kwang Kim; J Musculoskelet Trauma 2026;39(2):93-102. Published online March 10, 2026; DOI: https://doi.org/10.12671/jmt.2026.00024

Abstract PDF: Distal radius fractures are among the most common injuries of the upper extremity, particularly in the elderly population. Although the use of volar locking plate fixation has increased in recent years, evidence from randomized and prospective studies demonstrates that, while operative treatment may achieve superior radiographic alignment and enable more rapid early recovery, these advantages tend to diminish over time and do not result in superior long-term patient-reported functional outcomes in elderly patients. In addition, radiographic parameters show only a limited correlation with functional recovery. Consequently, nonoperative treatment remains a valid and important treatment option for distal radius fractures. The decision to pursue nonoperative management should be based on a comprehensive assessment of radiographic parameters—including dorsal tilt, radial shortening, and intraarticular displacement—together with patient-specific factors such as age, activity level, comorbidities, and functional expectations. For stable or minimally displaced fractures, an immobilization period of 3‒4 weeks is generally recommended, whereas displaced fractures typically require immobilization for 5‒6 weeks. In cases requiring manual reduction, traditional treatment protocols recommend weekly radiographic follow-up during the first 2‒3 weeks to monitor for secondary displacement. Successful nonoperative management should also emphasize effective swelling control through limb elevation, as well as the initiation of early finger exercises to prevent hand stiffness. After removal of the cast or splint, active wrist mobilization is essential for restoring optimal range of motion and achieving functional recovery.

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Clinical and radiographic outcomes of elastic stable intramedullary nailing for pediatric humeral shaft fractures: a retrospective case series: Kang-San Lee, Dongju Shin, Sang Hee Kim, Il Seo, Tae-Hoon Kim, Sung Jung Kim; J Musculoskelet Trauma 2026;39(2):156-161. Published online March 10, 2026; DOI: https://doi.org/10.12671/jmt.2025.00381

Abstract PDF: Background
Pediatric humeral shaft fractures are uncommon and are generally treated conservatively, with satisfactory clinical outcomes reported in most cases. However, conservative management often necessitates prolonged immobilization and frequent outpatient follow-up visits, and it carries an inherent risk of residual angular or translational deformity. Elastic stable intramedullary nailing (ESIN) provides a simple and minimally invasive method of fracture fixation that offers adequate stability without disrupting the periosteal blood supply, thereby permitting early mobilization and promoting rapid bone union. The purpose of this study was to evaluate the clinical and radiological outcomes of ESIN fixation in pediatric patients with humeral shaft fractures.
Methods
The medical records of pediatric patients with humeral shaft fractures who underwent ESIN fixation between January 2015 and November 2025 were retrospectively reviewed. Data collected included patient demographics, mechanism of injury, fracture location, number of elastic nails used, time to union, degree of residual angulation, range of motion (ROM), and postoperative complications.
Results
The mean age of the patients was 10.0 years (range, 7 to 15 years). The mean time to radiographic union was 5.4 weeks (range, 2.4 to 10.4 weeks). The mean coronal angulation was 0.2° (range, −9.1° to 5.8°), while the mean sagittal angulation was −1.3° (range, −6.9° to 5.3°). No cases of infection, nerve injury, or nail migration were observed during the follow-up period. At the final follow-up assessment, all patients demonstrated full shoulder and elbow ROM, with no residual deformity or pain reported.
Conclusions
In this small retrospective case series, ESIN fixation resulted in favorable union rates and excellent functional outcomes in pediatric humeral shaft fractures. Level of evidence: IV.

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Clinical and radiographic outcomes of hemiarthroplasty for proximal humeral fractures in Korea with three or more years of follow-up: a retrospective cohort study: Sang Jin Cheon, Kyu-Hak Jung, Min Hyeok Choi, Suk-Woong Kang; J Musculoskelet Trauma 2026;39(2):147-155. Published online February 26, 2026; DOI: https://doi.org/10.12671/jmt.2025.00325

Abstract PDF: Background
Shoulder hemiarthroplasty (HA) is an established treatment option for complex proximal humeral fractures, particularly in cases involving severe comminution or osteoporotic bone. This study investigated the clinical and radiographic outcomes of HA with a minimum follow-up of 3 years and aimed to identify prognostic factors associated with postoperative function.
Methods
We retrospectively reviewed 44 patients (16 males and 28 females; mean age, 61.2 years; range, 23–83 years) who underwent shoulder HA for complex proximal humeral fractures between 2005 and 2018. The mean follow-up duration was 70.4 months (range, 36–168 months). Clinical evaluations included the Constant score, visual analog scale pain score, patient satisfaction, and range of motion. Radiographic assessments examined tuberosity healing, radiolucent lines, acromiohumeral distance (AHD), and glenoid arthrosis.
Results
At the 3-year follow-up, 64% of patients reported being satisfied or very satisfied. The mean Constant score was 46.6 (range, 13–71), and the age- and sex-adjusted Constant score was 53.5 (range, 19–92). Radiographically, 23% of patients demonstrated radiolucent lines, and 41% showed evidence of glenoid arthrosis. Tuberosity absorption occurred in 39% of patients, with a mean onset of 11.2 months postoperatively, and was significantly associated with lower Constant scores and reduced range of motion. Patients younger than 60 years demonstrated better functional outcomes and lower rates of tuberosity absorption. The mean AHD decreased from 8.4 mm postoperatively to 4.4 mm at the 3-year follow-up (P<0.001).
Conclusions
Shoulder HA for complex proximal humeral fractures yielded satisfactory pain relief and functional outcomes, particularly when tuberosity healing was preserved. However, elderly patients with diminished bone quality were more likely to develop tuberosity absorption and experience poorer functional recovery. Meticulous surgical technique and careful postoperative surveillance remain essential to achieving optimal results. Level of evidence: III.

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Three-dimensional computed tomography-based differentiation of engaged versus displaced intertrochanteric fractures using the anterior fracture line: a cross-sectional study from Korea: Jae-Suk Chang, Jin Yeob Park, Sang-Ok Chun, Chul-Ho Kim; J Musculoskelet Trauma 2026;39(1):30-37. Published online January 25, 2026; DOI: https://doi.org/10.12671/jmt.2025.00318

Abstract PDF: Background
With the advent of an aging society, osteoporotic fractures—particularly hip fractures—are increasing, with a 1-year mortality rate of 17%. Achieving stable fixation that enables early ambulation is essential but remains challenging because complex intertrochanteric (IT) fracture patterns are often underestimated on plain radiographs. Using three-dimensional computed tomography (3D-CT), this study analyzed whether the anterior fracture line lies medial or lateral to the IT line and examined its relationship with displacement or distal medullary canal engagement, highlighting the potential influence of the joint capsule and capsular ligaments on fracture morphology and fixation stability.
Methods
A retrospective review was conducted on 96 osteoporotic IT fractures in patients aged ≥60 years treated between April 2013 and December 2022 at National Police Hospital and Asan Medical Center, Seoul, Korea. Fractures were classified as engaged, completely displaced, and partially displaced based on 3D-CT findings. The anterior fracture-line position (medial or lateral to the IT line) and the status of the lesser trochanter (LT) were evaluated. The chi-square or Fisher exact test was used for statistical comparisons.
Results
In total, 96 patients were analyzed. Of these, 49 cases (51.0%) were classified as engaged type, 27 cases (28.1%) as completely displaced type, and 20 cases (20.8%) as partially displaced type. When comparing fracture pattern with anterior fracture-line position, the completely displaced type showed a significantly higher proportion of lateral anterior fracture lines than the other two types (P<0.001). However, no significant association was identified between fracture pattern and LT displacement. When the anterior fracture-line position and LT displacement were evaluated together, only the engaged type demonstrated a possible association between a lateral anterior fracture line and LT displacement, though the statistical significance was weak (P=0.047).
Conclusions
Fracture lines lateral to the IT line were strongly associated with displacement in IT fractures; however, their relationship with LT involvement, reflecting iliopsoas tendon traction, was not clearly demonstrated. Although the factors contributing to the engaged-type fracture remain uncertain, the statistical association between fracture pattern and anterior fracture-line position suggests that capsular structures may play a stabilizing role in select fracture configurations. Further studies are needed to clarify these anatomical interactions. Level of evidence:

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Complications of hand fractures: strategies for prevention and management: Jong Woo Kang; J Musculoskelet Trauma 2026;39(1):1-11. Published online January 25, 2026; DOI: https://doi.org/10.12671/jmt.2025.00304

Abstract PDF: Various complications can occur after hand fractures. Among them, joint stiffness and malunion are the most common and significant complications, which are often accompanied by tendon adhesions and joint contracture. Careful evaluations of injury characteristics, such as fracture patterns, alignment, and soft tissue injury, are the first step to select appropriate management strategies and prevent complications of hand fractures. Close observation of its clinical prognosis is also essential for early detection and preemptive management of complications. Management of complications includes immobilization, rehabilitation, and various surgical techniques such as tenolysis or capsular release for joint stiffness, corrective osteotomy for malunion, and revisional fixation with bone graft for nonunion. The authors discuss prevention, early recognition, and management strategies for complications of hand fractures in this review.

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Epidemiological changes and surgical trends of distal radius fractures in adults over 50 years during the COVID-19 pandemic in Korea: a nationwide repeated cross-sectional study: Han-Kook Yoon, So Ra Yoon, Kee-Bum Hong, Youngsu Jung, SeongJu Choi, Jun-Ku Lee; J Musculoskelet Trauma 2026;39(1):12-19. Published online January 25, 2026; DOI: https://doi.org/10.12671/jmt.2025.00297

Abstract PDF Supplementary Material: Background
The COVID-19 pandemic is likely to have affected bone health in older adults in Korea. This study aimed to analyze changes in the epidemiology and management of distal radius fractures (DRFs) in older adults before and during the COVID-19 pandemic.
Methods
Patients with DRF aged over 50 years in 2017, 2018, 2020, and 2021 were included in this study. Patients were classified into a group with DRF occurring between 2017 and 2018 (before COVID-19) and a group with DRF occurring between 2020 and 2021 (during COVID-19). We calculated the incidence rates of DRF and compared them between the two groups. We also analyzed and compared demographic data (age, sex, income, residence) and the operation rate for DRF between the two groups. Patient selection and treatment were based on International Classification of Diseases, 10th revision codes.
Results
A total of 140,634 patients with DRF (before COVID-19, 69,794; during COVID-19, 70,840) were included. The incidence of DRF before COVID-19 (184.4/100,000 person-years) was higher than during COVID-19 (169.8/100,000 person-years). The operation rate was higher during COVID-19 (86.9%) than before COVID-19 (83.3%).
Conclusion
During the COVID-19 pandemic, the incidence of DRF decreased in South Korea. However, the rate of surgical treatment increased and exceeded the global surgical rate. Level of evidence: III.

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Computed tomography plane reformatting to reduce projection error in measuring Pauwels angle of femoral neck fractures: a cross-sectional study: Gyu Min Kong, Jae-Young Lim, Se-Lin Jeong, Gu-Hee Jung; J Musculoskelet Trauma 2026;39(1):38-47. Published online January 25, 2026; DOI: https://doi.org/10.12671/jmt.2025.00038

Abstract PDF: Objectives
This study aimed to assess fracture verticality in both coronal and axial planes after eliminating projection error in femoral neck fractures among non-older adults, and to demonstrate its clinical utility using computed tomography (CT)-based modeling at actual size.
Methods
This retrospective observational study enrolled 57 patients (30 males and 27 females), aged 20–65 years, with displaced femoral neck fractures. Based on CT images, an actual-size fracture model was constructed. The CT scanning plane was reformatted with the neck-shaft fragment realigned vertically to the ground and parallel to the femoral neck axis. Three consecutive images were used to generate coronal reformats at the centerline and posterior border to measure central and posterior coronal plane verticality as Pauwels’ angle (PA). The central image of the reformatted axial plane was used to assess axial plane verticality. Differences in verticality were analyzed using analysis of variance.
Results
Three coronal morphology types were identified: linear (n=30), concave (n=25), and convex (n=2). Two axial morphology types were observed: cephalad (n=35) and trochanteric (n=22). The mean central PA, posterior PA, and axial verticality were 55.43°±13.79°, 51.44°±11.13°, and 85.74°±18.41°, respectively. Only the central PA showed a significant difference (P<0.001). The PA was significantly higher in the linear coronal type between images (P<0.05) and in the trochanteric axial type (P<0.05).
Conclusions
After reformatting the scanning plane, the central PA showed significant variation between images. Femoral neck fractures of the linear type in the coronal plane and the trochanteric type in the axial plane demonstrated greater verticality than other morphological types. Level of evidence:

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Surgical outcomes of the coracoid process fracture associated with the acromioclavicular joint injury in Korea: a case series: Dongju Shin, Sung Choi, Sangwoo Kim, Byung Hoon Kwack; J Musculoskelet Trauma 2026;39(1):54-61. Published online January 14, 2026; DOI: https://doi.org/10.12671/jmt.2025.00346

Abstract PDF: Background
Excluding technical reports and isolated case reports, there are no published studies evaluating coracoid process fixation with or without an acromioclavicular joint (ACJ) stabilization procedure for coracoid process fractures associated with ACJ injury. The purpose of this study was to assess the surgical outcomes of coracoid process fractures associated with ACJ injuries and to determine the usefulness of coracoid process fixation with or without an ACJ stabilization procedure.
Methods
From February 2006 to December 2015, patients with coracoid process fractures associated with ACJ injuries were enrolled. Radiological and clinical outcomes were analyzed in 12 patients who underwent coracoid process fixation with or without an ACJ stabilization procedure. A 3.5-mm cannulated screw with a washer or a 3.0-mm headless compression screw was used for coracoid process fixation, and either a clavicle hook plate or Kirschner (K)-wires were used for ACJ injuries when additional fixation was necessary.
Results
Bone union was achieved in 11 patients (91.7%), while one case was determined to be a nonunion at 6 months. Radiological union occurred at an average of 3 months (range, 1.5–4 months) in all patients except the nonunion case. At the final follow-up, the average clinical scores were a visual analogue scale (VAS) pain score of 1.5 (range, 0–4) and a UCLA score of 30.9 (range, 28–35). Clinical outcomes were satisfactory in all patients, including the patient with nonunion.
Conclusion
The clinical and radiological outcomes of treating coracoid process fractures associated with ACJ injuries using coracoid process fixation with or without ACJ stabilization were favorable. A cannulated screw with a washer and clavicle hook plate fixation may provide sufficient stability for both the coracoid process fracture and the ACJ injury when feasible. Level of evidence: IV.

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Rim plate-assisted intramedullary nail and plate combination technique for complex tibial plateau-to-diaphysis fractures: a technical note and case series: Whee Sung Son; J Musculoskelet Trauma 2026;39(1):62-71. Published online December 4, 2025; DOI: https://doi.org/10.12671/jmt.2025.00290

Abstract PDF: Complex tibial plateau-to-diaphysis fractures present a significant surgical challenge due to their intricate fracture patterns and frequent association with severe soft tissue damage and concomitant injuries. This technical note introduces a novel fixation strategy: the rim plate-assisted intramedullary nail-plate combination (NPC) technique. In this approach, a rim plate simplifies the conventional NPC procedure by unifying the tibial plateau fracture into a single structural segment. This modification eliminates the need to address the articular and diaphyseal components simultaneously while enhancing articular stability. Furthermore, the technique preserves soft tissue integrity and promotes early rehabilitation. Clinical case examples demonstrate its successful application in managing complex tibial plateau-to-diaphysis injuries. Level of evidence: V.

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Comparative results of the femoral neck system versus the dynamic hip screw for stable femoral neck fractures in older adults in Korea: a retrospective cohort study: Byung-Chan Choi, Byung-Woo Min, Kyung-Jae Lee, Jun-Sik Hong; J Musculoskelet Trauma 2025;38(4):203-211. Published online October 24, 2025; DOI: https://doi.org/10.12671/jmt.2025.00276

Abstract PDF: Background
This study aimed to compare the clinical and radiological outcomes of the femoral neck system (FNS) and the dynamic hip screw (DHS) for the internal fixation of stable femoral neck fractures in older adults.
Methods
This retrospective cohort study included 48 matched older adult patients based on sex, age, BMI, and osteoporosis status, who had undergone internal fixation with either FNS or DHS for stable femoral neck fractures between January 2010 and December 2022. To minimize selection bias, a 1:1 case-control matching was performed based on sex, age, body mass index (BMI), and the presence of osteoporosis. A total of 48 patients (24 in each group) were included. We compared perioperative data (operation time, hemoglobin change, transfusion rate), functional outcomes using the Koval score, and radiological outcomes, including union rate, femoral neck shortening, and complication rates.
Results
The mean operation time was significantly shorter in the FNS group than in the DHS group (60.9 minutes vs. 70.8 minutes; P=0.007). There were no statistically significant differences between the two groups in the union rate (87.5% in FNS vs. 95.8% in DHS), femoral neck shortening, final Koval score distribution, or overall complication rates (12.5% in both groups).
Conclusions
For treating stable femoral neck fractures in older adults, the FNS demonstrated comparable clinical and radiological outcomes to the DHS, with the distinct advantage of a shorter operation time. While these findings suggest that the FNS is a promising and safe alternative that may reduce the surgical burden, definitive conclusions are precluded by the small sample size, warranting further research to corroborate these results. Level of evidence: IV.

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Relationship of lateral malleolar fracture patterns to posterior malleolar fracture morphology in supination-external rotation ankle fractures in Korea: a retrospective cohort study: Jong-Eun Kim, Chan-Jin Park, Jun-Young Lee, Keun-Bae Lee, Gun-Woo Lee; J Musculoskelet Trauma 2025;38(4):212-220. Published online October 24, 2025; DOI: https://doi.org/10.12671/jmt.2025.00234

Abstract PDF: Background
Posterior malleolar fractures frequently accompany rotational ankle fractures. However, the morphological relationship between lateral and posterior malleolar fractures in supination-external rotation (SER) ankle fractures remains unclear. This study aimed to classify lateral malleolar fracture patterns in SER type 3 and 4 ankle fractures and investigated their associations with posterior malleolar fracture morphology.
Methods
We retrospectively reviewed 132 patients with SER type 3 or 4 ankle fractures and concurrent posterior malleolar fractures between January 2016 and December 2021. Lateral malleolar fractures were categorized as fibular fractures extending <4.5 cm proximal to the ankle joint (102 ankles) or fibular fractures extending ≥4.5 cm proximal to the ankle joint (30 ankles) based on posterior cortex height measured using three-dimensional computed tomography (3D-CT). Posterior malleolar fracture morphology was assessed using the Haraguchi and Bartonicek classifications. Quantitative parameters—including fracture height, angle, and articular involvement—were analyzed using 3D-CT imaging.
Results
Fibular fractures extending ≥4.5 cm proximal to the ankle joint were associated with a significantly higher frequency of Haraguchi type II and Bartonicek types 3 and 4 posterior malleolar fractures. This group also exhibited greater articular involvement (19.2% vs. 12.0%) and posterior cortical height (55.4 mm vs. 24.8 mm) compared to the <4.5 cm group (all P<0.001).
Conclusions
In SER type 3 and 4 ankle fractures, a fibular fracture extending ≥4.5 cm proximal to the ankle joint may be associated with posterior malleolar fractures exhibiting greater articular involvement and medial extension. Preoperative evaluation of the lateral malleolar fracture pattern may provide useful insights into posterior malleolar morphology and assist in surgical planning. However, these findings should be interpreted with caution due to inherent study limitations. Level of evidence: IV

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Correlation of bone mineral density with ankle fractures in older adults in Korea: a retrospective cohort study: Seung Hyun Lee, Chae Hun Lee, Seo Jin Park, Jun Young Lee; J Musculoskelet Trauma 2025;38(4):186-192. Published online October 24, 2025; DOI: https://doi.org/10.12671/jmt.2025.00150

Abstract PDF: Background
Bone mineral density (BMD) is well-documented in relation to fractures of the spine, hip, distal radius, and proximal humerus; however, its correlations with other fracture types are less established. This study aimed to analyze BMD and associated risk factors in older adults (≥65 years of age) with osteoporotic ankle fractures. These fractures involve low-energy trauma, resulting from falls from a standing height or lower, and occur from impacts which typically do not cause fractures in individuals with normal bone.
Methods
This retrospective study analyzed data from 1,411 patients diagnosed with ankle fractures admitted to Chosun University Hospital between February 2012 and April 2023. After applying inclusion criteria (age ≥65 years; low energy ankle fracture) and exclusion criteria (high energy trauma, open/multiple fractures, missing dual X-ray absorptiometry [DXA]), 73 of 1,411 patients were analyzed. Lumbar spine, femoral neck, and total hip T scores were obtained with a Horizon Wi DXA scanner, and associations with age, sex, mechanism of injury, comorbidities, smoking status, alcohol consumption, body mass index (BMI), and history of fractures were tested by ANOVA with Scheffe post hoc and Fisher exact tests.
Results
Lower BMD correlated significantly with older age, female sex, and lower BMI (P<0.05) in older adults with ankle fractures. No significant associations were observed for comorbidities (diabetes, hypertension, dementia), smoking, alcohol consumption, injury mechanism, or prior fractures.
Conclusion
These results indicate that older age, female, and lower BMI are linked to reduced BMD in ankle fracture patients over 65 years of age. Focused osteoporosis screening and management may therefore be most beneficial for older, low BMI women presenting with ankle fractures. Level of evidence: IV.

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Risk factors for ankle fractures in older adults based on clinical components of the Fracture Risk Assessment (FRAX) tool and comorbidities in Korea: a retrospective case-control study: Myeong Jun Song, Se Woong Jang, Jun Young Lee, Seojin Park; J Musculoskelet Trauma 2025;38(4):193-202. Published online October 24, 2025; DOI: https://doi.org/10.12671/jmt.2025.00143

Abstract PDF: Background
Ankle fractures are common in older adults; however, their relationship with osteoporotic fractures remains unclear. This study aimed to evaluate potential risk factors for ankle fractures in older adults by analyzing individual clinical components of the Fracture Risk Assessment (FRAX) tool and comorbidities.
Methods
We conducted a retrospective case-control study including 84 patients aged ≥65 years with ankle fractures and 150 controls who underwent bone mineral density (BMD) testing without prior ankle fractures. The variables analyzed included age, sex, body mass index, smoking, alcohol consumption, prior fracture history, and comorbidities such as hypertension, diabetes mellitus, and dementia. BMD was measured at the spine, total hip, and femoral neck.
Results
Univariate analysis showed that alcohol consumption, diabetes mellitus, and total hip T-score categories were significantly associated with ankle fractures. In binary logistic regression, alcohol consumption remained significantly associated with higher ankle fracture risk (odds ratio [OR], 5.302; 95% confidence interval [CI], 1.778–15.811; P=0.003), and both osteopenia and osteoporosis at the total hip were also associated with increased risk (OR, 3.260, P=0.049; OR, 3.561, P=0.031, respectively). Diabetes mellitus did not reach statistical significance in the adjusted model (P=0.074). Model fit was adequate (Hosmer-Lemeshow P=0.377), and post hoc power analysis confirmed sufficient sample size.
Conclusions
These findings suggest that lower total hip BMD and alcohol-related factors may be associated with ankle fracture risk in older adults. The FRAX score itself was not calculated; instead, this study focused on analyzing selected clinical components. Limitations include the retrospective design, lack of fall and medication data, and cross-sectional BMD assessment. Level of evidence: III.

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Risk factors of surgical complications after use of the femoral neck system: a random forest analysis: Chul-Ho Kim, Hyun-Chul Shon, Han Soul Kim, Ji Wan Kim, Eic Ju Lim; J Musculoskelet Trauma 2025;38(3):160-167. Published online July 23, 2025; DOI: https://doi.org/10.12671/jmt.2025.00157

Abstract PDF

Background
The femoral neck system (FNS), a novel fixation device for managing femoral neck fractures (FNFs), has gained popularity in recent years. However, analyses of the surgical complications and reoperation risks associated with the use of FNS remain limited.
Methods
This retrospective observational study analyzed 57 patients who had undergone FNS fixation for FNF at two university hospitals between July 2019 and February 2024. Demographic, perioperative, and outcome variables, including age, sex, fracture classification (Garden, Pauwels, and AO), implant characteristics, tip-apex distance (TAD), neck shortening, and neck-shaft alignment, were analyzed. In addition to univariate analysis, a machine learning analysis was conducted using a random forest classifier with stratified sampling (80% training, 20% testing). The accuracy, precision, recall, F1-score, and area under the receiver’s operating curve were calculated to assess model performance.
Results
Ten patients experienced osteonecrosis of the femoral head (n=6), implant cut-out or penetration (n=3), and peri-implant fracture (n=1). Univariate analysis revealed that the TAD in the complication group was significantly shorter than that in the control group (12.1 vs. 16.7 mm; P=0.012). Additionally, neck shortening in the complication group was greater than that in the control group (4.9 vs. 2.3 mm; P=0.011). The random forest model achieved an accuracy of 83.3% and identified postoperative neck-shaft angle (NSA) as the most important predictor of complications (feature importance, 0.161), followed by bolt length (0.102) and preoperative NSA (0.094).
Conclusions
Risk factor analysis conducted using a random forest model identified postoperative NSA as the most important feature associated with postoperative complications following FNS. Therefore, care should be taken to normalize the postoperative NSA during FNF surgery. Level of Evidence: III.

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Length-stable fixation reduces femoral neck shortening in unstable femoral neck fractures: A retrospective comparative study of length-stable dynamic hip screw versus femoral neck system fixation
Seonghyun Kang, Wonseok Choi, Jeong Seok Choi, Eic Ju Lim, SungJin Ahn, Jong-Keon Oh, William T. Kent, Whee Sung Son, Jae-Woo Cho
Journal of Orthopaedic Surgery.2026;[Epub] CrossRef

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Current concepts in the management of phalangeal fractures in the hand: Hyun Tak Kang, Jun-Ku Lee; J Musculoskelet Trauma 2025;38(3):109-123. Published online July 22, 2025; DOI: https://doi.org/10.12671/jmt.2025.00136

Abstract PDF

This review focuses on the treatment of hand fractures based on the anatomical location of the fractured phalanx, excluding the thumb, and examines recent studies on the topic. The main points are as follows: in most cases of hand fractures, conservative treatment should be prioritized over surgical intervention. The three key factors in determining whether surgical treatment is necessary are (1) whether the fracture is intraarticular, (2) the stability of the fracture itself, and (3) the extent of damage to surrounding soft tissues. The primary surgical treatment is closed reduction and Kirschner-wire fixation. The risk of rotational deformity increases with fractures closer to the proximal region. Intra- articular fractures may lead to subsequent stiffness and arthritis; thus, computed tomography is recommended to assess the fracture pattern. Anatomic reduction of intraarticular fragments is required, along with correction of the inherent joint instability. No surgical method has proven to be superior; it is advantageous for the surgeon to choose a surgical approach they are familiar with and confident in, based on the specific fracture and patient factors. Complications in hand fractures are various; the most frequent is stiffness, and nonunion is uncommon. Early joint motion is crucial in minimizing the risk of stiffness.

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Imaging of hand and wrist injuries in alpine skiing: common injury mechanisms, imaging findings, and treatment
Andreas Josef Walch, Andreas Schweizer, Reto Sutter
Skeletal Radiology.2026;[Epub] CrossRef

60,583 View
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Computational simulation of coracoclavicular screw insertion through the superior distal clavicular plate for clinical applications in Korean cadavers: Hyung-Lae Cho, Ji Han Choi, Se-Lin Jeong, Gu-Hee Jung; J Musculoskelet Trauma 2025;38(3):143-151. Published online July 22, 2025; DOI: https://doi.org/10.12671/jmt.2025.00122

Abstract PDF: Background
The study was conducted to determine the practical area for inserting the coracoclavicular (CC) screw through the plate by analyzing three-dimensional (3D) shoulder models featuring virtually implanted, actual-size plates and screws.
Methods
Ninety cadaveric shoulders (41 males and 49 females) underwent continuous 1.0-mm slice computed tomography scans. The data were imported into image-processing software to generate a 3D shoulder model, including the scapula and clavicle. The overlapping area between the clavicle and the horizontal portion of the coracoid process (horizontal portion_CP) was analyzed in the cranial view. A curved pelvic recon plate was virtually placed on the upper surface of the distal clavicle, and an actual-size (3.5 mm) CC screw was inserted through the plate.
Results
The distal clavicle directly overlapped with the horizontal portion_CP in the vertical direction. The overlapping area was sufficient to place the 3.5 mm and 4.5 mm-sized screws. In all shoulder models, the CC screw could be inserted through the plate into the vertical direction, with an average length of 35.5 mm (range, 26.2–62.5 mm; standard deviation, 1.2 mm). In 87 models, the CC screw was inserted through the third hole from the lateral end of the plate. Two models were inserted through the second hole, and one model through the fourth hole.
Conclusions
The upper surface of the clavicle has sufficient overlapping area to place CC screws through the plate in the vertical direction in the corresponding hole. Supplemental CC screw fixation through the plate can be performed without additional or special equipment. Level of evidence: IV

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Biomechanical finite element analysis of a femoral neck system fixation construct for femur neck fractures and clinical implications: Hoon-Sang Sohn, Se-Lin Jeong, Gu-Hee Jung; J Musculoskelet Trauma 2025;38(3):133-142. Published online July 22, 2025; DOI: https://doi.org/10.12671/jmt.2025.00108

Abstract PDF

Background
This study assessed the structural/mechanical stability of fixation constructs with a femoral neck system (FNS) via finite element analysis after simulating femoral neck fractures and explored the clinical implications.
Methods
We simulated subcapital, transcervical, basicervical, and vertical fracture models using a right femur (SAWBONES) and imported the implant model of FNS to Ansys (Ansys 19.0, Ansys Inc.) to place the implant in the optimal position. The distal end of the femur model was completely fixed and was abducted 7°. The force vector was set laterally at an angle of 3° and posteriorly at an angle of 15° in the vertical ground. The analysis was conducted using Ansys software with the von Mises stress (VMS) in megapascals (MPa).
Results
The maximum VMS of the fracture site was 67.01 MPa for a subcapital, 68.56 MPa for a transcervical, 344.54 MPa for a basicervical, and 130.59 MPa for a vertical model. The maximum VMS of FNS was 840.34 MPa for a subcapital, 637.37 MPa for a transcervical, 464.07 MPa for a basicervical, and 421.01 MPa for a vertical model. The stress distribution of basicervical and vertical fractures differed significantly, and the basicervical fracture had higher VMS at the bone, implant, and fracture sites.
Conclusions
FNS fixation should be performed with consideration the osseous anchorage in the femoral head, and this technique might be appropriate for vertical fractures. Regarding the VMS at the fracture site, FNS might be applied cautiously only to basicervical fractures with anatomical reduction without a gap or comminution. Level of evidence: IV.

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Finite element analysis of screw thread geometry and titanium plate materials in internal fixation of the human femur
Abdessamed Bachiri, Mustapha Amine Arab, Nadia Kadouri
Computer Methods in Biomechanics and Biomedical Engineering.2026; : 1. CrossRef

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Atypical femoral fractures: an update: Won-Tae Cho, Jeong-Hyun Koh, Seungyeob Sakong, Jung-Taek Kim; J Musculoskelet Trauma 2025;38(2):41-52. Published online March 28, 2025; DOI: https://doi.org/10.12671/jmt.2025.00031

Abstract PDF

This narrative review provides an up-to-date overview of atypical femoral fractures (AFFs), emphasizing diagnostic criteria, epidemiology, pathophysiology, risk factors, and evaluation with screening strategies. AFFs are rare but significant complications associated with prolonged bisphosphonate (BP) therapy for osteoporosis. Although the pathogenesis of AFFs has not been fully elucidated, its primary mechanism is thought to involve impaired bone remodeling, leading to unhealed microfractures that progress to stress fractures under repetitive loading. AFFs can occur in various regions of the femur, influenced by femoral geometry and the lower limb axis. Other risk factors include prolonged steroid use, arthroplasty, genetic predispositions, and metabolic bone disorders. The diagnosis of AFFs is based on criteria established by the American Society for Bone and Mineral Research. Key radiographic features include lateral cortical transverse fracture lines and localized cortical thickening, typically with minimal or no comminution on the medial cortex. Dual-energy X-ray absorptiometry for screening tests and magnetic resonance imaging as an advanced imaging modality enable the early detection of incomplete fractures. This multi-modal approach facilitates the prompt identification of prodromal cortical changes, reducing the risk of complete fractures in high-risk populations, particularly patients undergoing prolonged BP therapy. Level of Evidence: V

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Clinical Images: Bisphosphonate‐associated atypical femoral fracture with contralateral cortical beaking
Andreina Martinez Paulino, Valentin Marian
ACR Open Rheumatology.2026;[Epub] CrossRef
Atypical femoral fracture: The periprosthetic variant about two cases without bisphosphonate use
Guillaume Auberger, Thomas Aubert, Younes Kerroumi, Philippe Leclerc, Simon Marmor
SICOT-J.2026; 12: 41. CrossRef
Atypical Femur Fractures Without Bisphosphonate Exposure (AFFwB): A Retrospective Report of 21 Cases
Lorenzo Lucchetta, Carmelinda Ruggiero, Samuele Berardi, Alice Franceschi, Michele Bisaccia, Giuseppe Rinonapoli
Journal of Clinical Medicine.2025; 15(1): 25. CrossRef

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Avulsion fractures around the hip joint and pelvis: Won-Sik Choy, Yonghan Cha, Jung-Taek Kim, Jun-Il Yoo, Jin-Woo Kim; J Musculoskelet Trauma 2025;38(2):53-62. Published online March 24, 2025; DOI: https://doi.org/10.12671/jmt.2025.00010

Abstract PDF

Avulsion fractures occur when tendons or ligaments are subjected to forces greater than they can withstand at the apophysis or enthesis, regardless of fusion status. The pelvis and hip joint are vulnerable to these injuries due to the diverse muscular structures in these structures, which serve as origins for multiple muscles leading to the lower extremities. Pelvic avulsion fractures commonly affect young athletes, but can also occur in adults. The diagnosis typically involves assessing trauma history, a clinical examination, and radiographic imaging. If the diagnosis is unclear, additional tests such as computed tomography and magnetic resonance imaging may assist in the diagnosis and provide useful information for treatment decisions. While most avulsion fractures respond well to conservative treatment, surgical intervention may be preferred in severe displacements, cases of significant retraction in active athletes, or when a faster recovery is necessary. Chronic or neglected injuries may lead to excessive osseous formation around the pelvis, causing impingement syndromes. Recognizing characteristic radiological findings based on pelvic anatomy helps to make an accurate diagnosis, as chronic injuries can mimic tumors or infectious conditions, necessitating a careful differential diagnosis.

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Dawid Bartosik, Bartlomiej Cwikla, Anna Kowalczyk, Michalina Loson-Kawalec, Anna Palka-Szymaniec, Bartosz Starzynski, Alina Keska, Jakub Szkuta, Klaudia Wojcik
Cureus.2026;[Epub] CrossRef
Outcomes of Conservative Versus Surgical Treatment of Adolescent Pelvic and Hip Avulsion Fractures: A Systematic Review and Meta-Analysis
Lindsey L. Molina, Andrew M. Block, Sasha Carsen, Allison E. Crepeau, Tyler J. Stavinoha, Michael M. Chau, Jeffrey J. Nepple
Journal of Pediatric Orthopaedics.2026;[Epub] CrossRef
Diagnostic Accuracy of Ultrasound for Adolescent Pelvic Avulsion Fractures: A Blinded Multirater Study
Meena Meiyyappan, Robert Van Pelt, Kate Lampe, Jane Chung, Matthew Ditzler, Shane Miller, Henry Ellis, Hamza Alizai, Matthew Hammer, Ben Johnson, Charles Wyatt, Jacob Jones
Journal of Clinical Ultrasound.2026;[Epub] CrossRef

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Easily missed nondisplaced fractures accompanying complete fractures in the lower extremity and pelvis: a narrative review: Young-Chang Park; J Musculoskelet Trauma 2025;38(1):5-12. Published online January 24, 2025; DOI: https://doi.org/10.12671/jmt.2025.00017

Abstract PDF

Nondisplaced fractures accompanying complete fractures are often difficult to detect on plain radiographs or computed tomography scans, posing a diagnostic challenge. The diagnosis of these frequently overlooked injuries can be delayed, potentially leading to suboptimal patient outcomes. This review discusses four commonly missed fracture patterns in the lower extremity and pelvis, including posterior involvement in fragility fractures of the pelvis, intertrochanteric extensions in isolated greater trochanter fractures, ipsilateral femoral neck fractures in high energy femoral shaft fractures, and posterior malleolar fractures in distal spiral tibial shaft fractures. An accurate diagnosis of these accompanying nondisplaced fractures is critical for optimizing surgical outcomes. Surgeons should incorporate thorough preoperative evaluations into their clinical practice to facilitate early detection and appropriate treatment strategies. Prompt identification and comprehensive management remain essential for improving patient outcomes.

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Selective Anterior Fixation for Rami Fractures in Anteroposterior Compression-Type Pelvic Ring Injuries: Impact of Posterior Stability
Jeong-Hyun Koh, Sumin Lim, Won-Tae Cho, Seungyeob Sakong, Wan-Sun Choi, Daehyun Han, Hyung Keun Song
Journal of Clinical Medicine.2026; 15(10): 3773. CrossRef
Initial lateral stress radiographs predict instability in fragility fractures of the pelvis type I and II: a prospective observational study
Kyu-Hyun Yang, Jun-Young An, Young-Chang Park
Scientific Reports.2026;[Epub] CrossRef

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Outcomes of open reduction and internal fixation using 2.0/2.4 mm locking compression plate in isolated greater tuberosity fractures of humerus: Sung Choi, Dongju Shin, Sangwoo Kim, Byung Hoon Kwack; J Musculoskelet Trauma 2025;38(1):32-39. Published online January 24, 2025; DOI: https://doi.org/10.12671/jmt.2025.00005

Abstract PDF: Background
The purpose of this study was to retrospectively evaluate the radiographic and clinical results of a small single or double low-profile plate fixation of 2.0/2.4 mm locking compression plate (LCP) in treating isolated greater tuberosity (GT) fractures of the humerus. Methods: From June 2015 to October 2022, patients who underwent LCP in treating isolated GT fractures of the humerus were included in this study. The radiological and clinical results were analyzed in 15 patients who underwent open reduction and internal fixation used 2.0/2.4 mm LCP. Results: Bone union was achieved in 14 patients (93.3%) and one failed case was treated with a 2.4 mm single LCP fixation. Radiological union was achieved within 10–20 weeks. Complications occurred in two patients (13.3%), including the reduction failure and shoulder stiffness. At the final follow-up, the average clinical scores were as follows: a visual analog scale for pain of 2.1 (range, 0–5) and a University of California, Los Angeles score of 27.2 (range, 18–31). Regarding range of motion (ROM), the average active ROMs were 142° for forward flexion (range, 120°–150°), 147.1° for abduction (range, 120°– 180°), and 59.3° for external rotation (range, 45°–80°). For internal rotation, the average was observed to reach the 10th thoracic vertebra (range, 1st lumbar vertebra–7th thoracic vertebra). Conclusions: The clinical and radiologic outcomes of treating isolated GT fracture using 2.0/2.4 mm LCP were favorable, and double low-profile plate fixation may be beneficial for sufficient fracture stability if possible. Level of evidence: Level IV, case series.

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Interpositional tricortical iliac bone graft in nonunion of midshaft clavicular fractures: Eun-Seok Son, Bum-Soon Park, Chang-Jin Yon, Chul-Hyun Cho; J Musculoskelet Trauma 2025;38(1):23-31. Published online January 24, 2025; DOI: https://doi.org/10.12671/jmt.2025.00004

Abstract PDF: Background
The purpose of this study was to investigate the radiological and clinical outcomes after interpositional tricortical iliac bone graft with plate fixation for the nonunion of clavicle midshaft fractures. Methods: Between 2007 and 2020, 17 cases who were treated by interpositional tricortical iliac bone graft with plate fixation for the clavicle midshaft nonunion combined with bone defect were investigated. The mean age was 53 years (range, 22–70 years). The mean follow-up period was 102.2 months (range, 18–193 months). Serial plain radiographs were used to evaluate radiological outcomes. The University of California, Los Angeles (UCLA) score, American Shoulder and Elbow Surgeons (ASES) score, and Quick-disabilities of the arm, shoulder, and hand (DASH) score were used to evaluate clinical outcomes. Complications were also evaluated. Results: All cases achieved complete bony union with mean healing time of 17.6 weeks (range, 14–22 weeks). The mean clavicle length difference was significantly decreased from 9.1 mm preoperatively to 2.6 mm postoperatively (P<0.001). The mean UCLA and ASES scores were significantly improved from 18.1 and 52.2 before surgery to 30.6 and 88.6 after surgery (both P<0.001), respectively. The mean final Quick-DASH score was 18.0. Three cases (17.6%) developed postoperative complications including two cases of shoulder stiffness and one case of screw irritation. Conclusions: Interpositional tricortical iliac bone graft with plate fixation for the clavicle midshaft nonunion demonstrated excellent radiological and clinical outcomes. In cases of atrophic nonunion combined with bone defect, this technique is an effective option that can provide structural support and restore clavicle length. Level of evidence: Level IV, case series.

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Analysis of Missed Fractures by Bone Scan in Elderly Hip Fracture Patients with Osteoporosis: Tae Hun Lee, Yeong Hyun Lee, Seo Won Kang; J Korean Fract Soc 2024;37(3):144-149. Published online July 31, 2024; DOI: https://doi.org/10.12671/jkfs.2024.37.3.144

Abstract PDF: Purpose
The incidence of hip fractures is increasing due to an increase in elderly populations because elderly patients often have accompanying diseases, such as cognitive impairment or dementia, which may lead to missed fractures. Therefore, this study assessed the utility of bone scans in detecting missed fractures in elderly patients.
Materials and Methods
This study analyzed the data from 178 patients treated from January 2014 to March 2023. The inclusion criteria were patients who had hip fractures with osteoporosis over 70 years old. Bone scans were performed on average 10 days after injury. The rate and trend of missed fractures not detected in the initial diagnosis were determined based on sex, age, dementia status, and the presence of osteoporosis.
Results
Among the 178 hip fracture patients over 70 years old, 37 patients had a history of being diagnosed with dementia, and 141 patients had never been diagnosed. Missed fractures were confirmed in 49 cases (42 patients) (23.6%). The dementia group had 13 missed fractures, and the non-dementia group had 36 missed fractures, but there was no significant difference. Rib fractures were most common, followed by vertebral fractures.
Conclusion
Missed diagnoses of fractures were common among elderly hip fracture patients. A whole body bone scan appeared to be effective in detecting missed fractures. Therefore, identifying accompanying fractures through bone scans and delivering appropriate treatment can play an important role in postoperative rehabilitation.

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Effect of Coincident Hip Fracture on Distal Radius Fracture in Patients Treated with a Volar Locking Plate: A Matched-Pair Analysis of Elderly Patients: Hyoung-Seok Jung, Min-Su Chu, Jae-Sung Lee; J Korean Fract Soc 2024;37(3):137-143. Published online July 31, 2024; DOI: https://doi.org/10.12671/jkfs.2024.37.3.137

Abstract PDF: Purpose
Although the incidence of simultaneous distal radius and hip fractures in older patients is minimal, patients with these coincident types of fractures exhibit unique features. This study analyzed the outcomes associated with operative treatment involving volar-locking plates in patients who sustained distal radius fractures and hip fractures and compared them with those in matched control patients who had undergone treatment for isolated distal radius fractures.
Materials and Methods
Between 2010 and 2015, 34 patients, who met the criteria for hip and distal radius fractures, were retrospectively reviewed. Thirty-four matched patients who underwent volarlocking plate fixation for isolated distal radius fractures during the same period were also reviewed. The clinical outcomes between the groups were compared using postoperative radiological parameters.
Results
The radiological assessment revealed a better radial length and inclination in the control group than in the study group at the final follow-up. In other words, patients with coincident hip fractures showed a higher tendency for loss of reduction. Despite the differences in radiological parameters, no significant differences in clinical outcomes were observed, except for grip strength.
Conclusion
Although volar-locking plating provides greater stabilization, a loss of reduction occurred in patients with coincident hip fractures.

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Comparison of the Radiological Outcomes of an Anatomical Quadrilateral Surface Plate with a Pelvic Reconstruction Plate in Acetabulum Fractures: Sung Hyun Yoon, Hee Gon Park, Dong Uk Lee; J Korean Fract Soc 2024;37(2):95-101. Published online April 30, 2024; DOI: https://doi.org/10.12671/jkfs.2024.37.2.95

Abstract PDF: Purpose
This study compared the radiological outcomes of fixation using an anatomical quadrilateral surface plate with those using a traditional pelvic reconstruction plate for fractures involving the quadrilateral surface or superomedial wall of the acetabulum.
Materials and Methods
From 2015 to 2022, 47 patients who met the inclusion and exclusion criteria were analyzed retrospectively. Internal fixation of an acetabular fracture was achieved with a pelvic reconstruction plate (n=28) or an anatomical quadrilateral surface plate (n=19). The ability to achieve immediate postoperative anatomical reduction and the long-term outcomes were assessed by confirming the arthritic changes. Immediate postoperative reduction quality and long-term radiological outcomes for post-traumatic arthritis were assessed using the Matta scoring system on standard radiographs.
Results
The assessment of immediate postoperative reduction in the pelvic reconstruction plate group was satisfactory in 16 patients (57.1%) and unsatisfactory in 12 patients (42.9%). In the anatomical quadrilateral surface plate group, the results were satisfactory in 16 patients (84.2%) and unsatisfactory in 3 patients (15.8%). When evaluating over an extended follow-up period in the pelvic reconstruction plate group, 19 patients (67.9%) demonstrated satisfactory, while 9 patients (32.1%) had unsatisfactory outcomes. In the anatomical quadrilateral surface plate group, 12 patients (63.2%) achieved satisfactory, and 7 patients (36.8%) had unsatisfactory outcomes. The immediate postoperative reduction quality was superior in the anatomical quadrilateral surface plate group (p=0.03). Comparing longterm results, the anatomical quadrilateral surface plate group did not have statistically more favorable outcomes (p=0.49).
Conclusion
In this study, the anatomical quadrilateral surface plate achieved sufficiently good radiological results without significant difference from the existing pelvic reconstruction plate. It was concluded that it is a useful option that can replace the existing metal plate in the selection of surgery for acetabular fractures.

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Treatment of Avulsion Fractures around the Knee: Sumin Lim; J Korean Fract Soc 2024;37(2):117-124. Published online April 30, 2024; DOI: https://doi.org/10.12671/jkfs.2024.37.2.117

Abstract PDF: Avulsion fractures are common in athletes and result from high-impact or sudden, forceful movements involving the separation of a bone fragment at the ligament or tendon attachment site. The key focus areas include the anterior and posterior cruciate ligaments, medial collateral ligament, anterolateral complex, arcuate complex, medial patellofemoral ligament, patellar tendon, and quadriceps tendon. Diagnostic approaches combine radiography with advanced imaging techniques, such as computed tomography and magnetic resonance imaging, to elucidate the extent of injury and guide treatment decisions. Treatment ranges from conservative management for non-displaced fractures to surgical intervention for displaced fractures, with strategies customized based on the specific ligament involved and the nature of the fracture.

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Osteoporotic Hip Fracture: How We Make Better Results?: Byung-Chan Choi, Kyung-Jae Lee; J Korean Fract Soc 2024;37(1):52-59. Published online January 31, 2024; DOI: https://doi.org/10.12671/jkfs.2024.37.1.52

Abstract PDF: The prevalence of osteoporosis and incidence of osteoporotic fractures is increasing gradually as life expectancy is prolonged and the aged population increases. Osteoporotic hip fractures (femoral neck fractures and femoral intertrochanteric fractures) have high mortality because the patients with these fractures are elderly and have several comorbidities. Thorough preparation and a multidisciplinary approach in the preoperative period are critical, and early surgery is recommended. There are also several principles to treat osteoporotic hip fractures and prevent fixation failures. Many studies have suggested various treatment methods for femoral neck fractures and femoral intertrochanteric fractures. Functional recovery treatment is essential based on the patient’s health and activity levels. Finally, aggressive management of osteoporosis and the prevention of falling is needed to treat osteoporotic hip fractures successfully.

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Fracture-Related Complication: Fat Embolism Syndrome: Beom-Soo Kim; J Korean Fract Soc 2023;36(3):95-102. Published online July 31, 2023; DOI: https://doi.org/10.12671/jkfs.2023.36.3.95

Abstract PDF: Fat embolization is a common occurrence after trauma or during orthopedic procedures involving intramedullary manipulation. Although uncommon, fat embolism syndrome (FES) with respiratory failure, neurologic dysfunction, and petechial rash can be fatal to patients. Two theories are proposed for the manifestation of FES: in the mechanical theory, FES occurs when fat tissue in the bone marrow enters the bloodstream and mechanically blocks it; the biochemical theory proposes that FES occurs due to an inflammatory reaction caused by free fatty acids. There are currently no clear diagnostic criteria for FES, and symptoms and signs are typically nonspecific. For the treatment of FES, conservative and supportive management is performed for the specific symptoms, and close monitoring of the respiratory and neurologic systems is required in high-risk groups. Early fracture fixation of long bones helps prevent and reduce the severity of fat embolism.

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Outcomes of Minimally Invasive Surgery in Intra-Articular Calcaneal Fractures: Sanders Type III, Joint Depressive Type Calcaneal Fracture: Je Hong Ryu, Jun Young Lee, Kang Yeol Ko, Sung Min Jo, Hyoung Tae Kim; J Korean Fract Soc 2023;36(3):85-94. Published online July 31, 2023; DOI: https://doi.org/10.12671/jkfs.2023.36.3.85

Abstract PDF: Purpose
To evaluate the radiologic and clinical outcomes of a minimally invasive technique using the tarsal sinus approach in the management of Sanders type III, joint depressive type calcaneal fractures.
Materials and Methods
Between July 2011 and September 2019, data of 29 patients who underwent a minimally invasive procedure with the sinus tarsi approach for Sanders type III joint depressive intra-articular calcaneal fractures, and were followed up for more than 1 year were analyzed. We evaluated the radiologic outcomes by assessing the radiologic parameters (Böhler angle, Gissane angle, calca-neal length, calcaneal height, calcaneal width). We also evaluated the clinical outcomes based on the American Orthopaedic Foot and Ankle Society (AOFAS) ankle-hindfoot score and the complications associated with the technique.
Results
The radiological results showed an improvement in the Böhler angle from 2.5° to 18.6° and the Gissane angle from 132.4° to 119.1° after the operation. The mean AOFAS score during the clini-cal evaluation was 79.5. We observed 13 cases of posttraumatic arthritis, 1 case of subtalar arthrodesis, and no case of wound complication.
Conclusion
Minimally invasive technique for Sanders type III joint depressive calcaneal fractures resulted in relatively satisfactory radiologic and clinical outcomes. Open reduction and internal fixation through the sinus tarsi approach reduce complications including wound problems. This approach offers satisfactory results without long-term complications.

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Hip Fractures in the Elderly: Perioperative Management and Prevention of Medical Complications: Keong-Hwan Kim; J Korean Fract Soc 2023;36(1):39-44. Published online January 31, 2023; DOI: https://doi.org/10.12671/jkfs.2023.36.1.39

Abstract PDF

Elderly patients with hip fractures are at an increased risk of developing medical complications with higher mortality rates. Most patients require surgical treatment, and an early surgical intervention can reduce complications and lower mortality risk. A restrictive red blood cell transfusion strategy is usually applied, and the amount of transfusion can be reduced through medications such as tranexamic acid. Delirium can be prevented using non-pharmacological methods. In addition, it is necessary to prevent venous thromboembolism through mechanical or chemical prophylaxis. A multidisciplinary approach using the ERAS (Enhanced Recovery After Surgery) protocol and orthogeriatric care can help to reduce medical complications and mortality.

Citations

Citations to this article as recorded by

Comparison of Operation Time, Vital Signs, Bleeding Tendency, and Recovery Time Based on Anesthesia Methods in Patients Undergoing Hip Fracture Surgery
Je Bog Yoo, Woo Young In, Chang Ok Pyo, Jeung Hee Kwon, Min Ji Lee, Kwang Hee Kim, Kyoung Ok Kim, Mi Yu
Journal of PeriAnesthesia Nursing.2026; 41(3): 591. CrossRef
Treatment of Incompletely Displaced Femoral Neck Fractures Using Trochanteric Fixation Nail-Advanced in Patients Older Than 50 Years of Age
Jee Young Lee, Gyu Min Kong
Journal of Orthopaedic Trauma.2025; 39(7): 352. CrossRef

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Fragility Fractures of the Pelvis and Sacrum: Se-Won Lee, Ju-Yeong Kim; J Korean Fract Soc 2023;36(1):29-38. Published online January 31, 2023; DOI: https://doi.org/10.12671/jkfs.2023.36.1.29

Abstract PDF: The incidence of fragility fractures of the pelvis (FFP) has increased significantly due to the aging popu-lation and improved diagnostic modalities. The evaluation and treatment of these patients differ from that of high-energy pelvic ring injuries typically seen in younger patients. Therefore, it is important to classify the FFP by patterns of the classification system to standardize optimal treatment criteria and appropriate treatment strategy. However, some cases are not classifiable according to the FFP classifi-cation. A newly proposed classification that can be verified by comparing existing FFP classifications is needed to overcome the weak points. Non-operative treatment is usually considered first and should focus on early mobilization. Operative fixation should focus on stabilizing the minimally invasive pelvic ring than the reduction of fractures to facilitate early mobilization and avoid complications that can arise from comorbidities associated with immobility.

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Distal Femur Fractures Treated with Distal Femoral Locking Plate Fixation: A Retrospective Study of One Year Mortality and Risk Factors: Kwang-Hwan Jung, Yoon-Seok Youm, Seung-Hyun Jung, Jae-Min Oh, Ki Bong Park; J Korean Fract Soc 2023;36(1):10-16. Published online January 31, 2023; DOI: https://doi.org/10.12671/jkfs.2023.36.1.10

Abstract PDF: Purpose
This study examined the one-year mortality after locking plate fixation for distal femur fractures and the risk factors related to death.
Materials and Methods
From July 2011 to June 2020, 128 patients who underwent locking plate fixation for distal femur fractures were analyzed retrospectively. Epidemiologic information of the patients, characteristics related to fracture and surgery, and death were investigated. The risk factors related to death were investigated using Cox analysis, and a subgroup analysis was also performed based on the age of 65 years.
Results
The one-year mortality rate after locking plate fixation for distal femur fractures was 3.9%, and the mortality rates in patients younger than 65 years and older than 65 years were 0% and 6.7%, respectively. There were no significant risk factors related to death in the total population. On the other hand, in patients aged 65 years or older, however, high-energy fracture and high comorbidity index increased the risk of death after surgery by 6.9-fold and 1.9-fold, respectively.
Conclusion
The one-year mortality rate for the total patients was 3.9%, but the mortality rate for patients over 65 years of age increased to 6.7%. High-energy fractures and high comorbidity index were risk factors related to death after surgery for distal femur fractures in patients aged 65 years or older.

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Treatment of Scaphoid Fractures and Nonunions: Wan-Sun Choi; J Korean Fract Soc 2022;35(4):182-189. Published online October 31, 2022; DOI: https://doi.org/10.12671/jkfs.2022.35.4.182

Abstract PDF: A scaphoid fracture is one of the most common types of wrist fractures, and if treatment is delayed, there is a high possibility of nonunion due to anatomical factors such as limited blood supply to the injured bone. Therefore, it is important to suspect a scaphoid fracture based on the mechanism of wrist injury and physical examination of the patient. A computed tomography scan or magnetic resonance imaging can also aid early diagnosis of the fracture. Stable acute fractures can be treated conservatively, but unstable fractures require surgical treatment, and percutaneous screw fixation is usually performed. Nonunions require bone grafts and are treated with non-vascularized bone grafts and screw fixation. However, if the nonunion is located at the proximal pole, a vascularized bone graft may be considered because there is a possibility of avascular necrosis. Pedicled vascularized and free vascularized medial femoral condyle bone grafts are mainly used in such cases. The treatment of a proximal pole nonunion with impaired blood flow remains controversial. There are conflicting opinions on whether a nonvascularized bone graft is sufficient or whether a vascularized bone graft is necessary.

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Comparison of the Clinical and Radiological Outcomes of TFNA (Trochanteric Fixation Nail-Advanced) and PFNA-II (Proximal Femoral Nail Antirotation-II) Treatment in Elderly Patients with Intertrochanteric Fractures: Min Sung Kwon, Young Bok Kim, Gyu Min Kong; J Korean Fract Soc 2022;35(4):162-168. Published online October 31, 2022; DOI: https://doi.org/10.12671/jkfs.2022.35.4.162

Abstract PDF

Purpose
Trochanteric fixation nail advanced (TFNA) was modified to compensate for the shortcomings of proximal femoral nail antirotation-II (PFNA-II). The clinical and radiological outcomes of surgeries us-ing the PFNA-II and TFNA for femoral intertrochanteric fractures were compared.
Materials and Methods
Eighty-two patients who underwent surgeries using PFNA-II or TFNA were analyzed. Only those who were followed up for more than a year were enrolled. Bone union, shortening of the femoral neck, and the tip–apex distance of the intramedullary nail were compared in the radiological findings. Clinical outcomes, including the frequency of complications and gait ability (Koval score), were also assessed.
Results
The mean follow-up periods were 22 and 19 months for the PFNA-II and TFNA groups, re-spectively. In the PFNA-II group, two cases of femoral head cut-out and one case of varus collapse were observed. In the TFNA group, only one case of femoral head cut-out was observed; however, there was no significant difference in the frequency of complications between the two groups (p=0.37). Ad-ditionally, both the shortening of the femoral neck and the decrease in gait ability after surgery showed relative improvement in the TFNA group compared to the PFNA-II group; however, there was no sig-nificant difference between the two groups.
Conclusion
The use of both TFNA and PFNA-II was associated with satisfactory outcomes. In patients who underwent surgeries using TFNA, the recovery of gait ability, frequency of complications, and short-ening of the femoral neck were not significantly different from PFNA-II, suggesting that both are suitable instrument choices for intertrochanteric fracture treatment. However, the clinical significance must be further assessed using a larger group of patients over a longer follow-up period in future studies.

Citations

Citations to this article as recorded by

Treatment of Incompletely Displaced Femoral Neck Fractures Using Trochanteric Fixation Nail-Advanced in Patients Older Than 50 Years of Age
Jee Young Lee, Gyu Min Kong
Journal of Orthopaedic Trauma.2025; 39(7): 352. CrossRef
Clinical and Radiological Outcomes of Unstable Intertrochanteric Fractures Treated with Trochanteric Fixation Nail-Advanced and Proximal Femoral Nail Antirotation-II: Correlation between Lateral Sliding of the Helical Blade and Lateral Trochanteric Pain
Sung Yoon Jung, Myoung Jin Lee, Lih Wang, Hyeon Jun Kim, Dong Hoon Sung, Jun Ha Park
Journal of the Korean Orthopaedic Association.2024; 59(3): 208. CrossRef

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Benefits of a Demineralized Bone Matrix in Osteoporotic Intertrochanteric Femoral Fracture Patients: Se Jin Kim, Hong-Man Cho, Myung Cheol Jung; J Korean Fract Soc 2022;35(4):151-161. Published online October 31, 2022; DOI: https://doi.org/10.12671/jkfs.2022.35.4.151

Abstract PDF: Purpose
Osteoporosis causes various fixation failures in patients with intertrochanteric fractures. This study aimed to investigate the effect of a demineralized bone matrix (DBM) for cancellous or cortical bone defects on internal fixation in older osteoporotic patients with intertrochanteric fractures.
Materials and Methods
Among patients with intertrochanteric fractures who underwent surgical treatment from January 2016 to December 2021 at a facility, 171 patients were AO/OTA type 31-A1 and type 2 fractures which are considered relatively stable. The patients were grouped based on DBM use (Group A: DBM use, Group B: DBM non-use), and their clinical and radiology results were analyzed retrospectively. The patients were then subdivided into Group A-a and -b after removing factors that could cause treatment failures, such as the reduction status and location of the helical blade, and then further subdivided (Group A-a-1/2/3/4 and Group B-b-1/2/3/4) according to cancellous or cortical bone defects that could accompany intertrochanteric fractures. The time to full weight-bearing (FWB) and Harris hip score (HSS) 3 months after surgery in these subgroups were investigated.
Results
There was no significant difference in the clinical radiology results and complications between Group A and Group B. However, the time to FWB (p<0.001) and HSS (p=0.029) were significantly superior in Group A. In Group A-a with DBM use, after removing the risk factors for intertrochanteric fracture failure, the time to FWB (p=0.055) was close to the significance level, and HSS (p=0.036) was significantly superior. In Group A-a-1 (cancellous defect only) and Group A-a-3 (cancellous and cortical defect), the time to FWB (p=0.088, 0.052) was close to the significance level, and the HSS (p=0.039, 0.018) was significantly superior when DBM was used.
Conclusion
In patients with intertrochanteric fractures of AO/OTA type 31-A2.3 or less, if stable reduction and firm fixation are achieved, selective DBM use may help early recovery after surgery.

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Surgical Treatment of Distal Radius Fractures and Treatment of Common Accompanying Lesions: Joo-Hak Kim; J Korean Fract Soc 2022;35(3):120-127. Published online July 31, 2022; DOI: https://doi.org/10.12671/jkfs.2022.35.3.120

Abstract PDF: There have been major advances in the treatment of distal radius fractures over the past 20 years. Specifically, the development of the volar locking plate in 2001 and the subsequent improvements in its design and performance have enabled the treatment of distal radius fractures that were previously considered difficult to treat. The volar plate is used for fractures and shows good results with anatomical reduction and firm fixation. However, when trying to apply it to more complex fractures, there are still difficulties related to the unique anatomical structure of the distal radius, and there are also several factors that can impair joint function and cause pain after surgery. In this review, the factors to be considered to ensure better outcomes during ORIF (open reduction and internal fixation), and external fixation in the treatment of distal radial fractures are described. The review also details the common accompanying injuries and management methods.

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