Journal of Musculoskeletal Trauma

Does the Operator’s Experience Affect the Occurrence of Complications after Distal Radius Fracture Volar Locking Plate Fixation? A Comparative Study of the First Four Years and Thereafter: Kee-Bum Hong, Chi-Hoon Oh, Chae Kwang Lim, Sungwoo Lee, Soo-Hong Han, Jun-Ku Lee; J Musculoskelet Trauma 2024;37(4):175-183. Published online October 25, 2024; DOI: https://doi.org/10.12671/jmt.2024.37.4.175; Correction in: J Musculoskelet Trauma 2025;38(1):40

Purpose
The management of distal radius fractures (DRFs) has evolved with the introduction of volar locking plate (VLP) fixation, offering stable fixation and better outcomes. Nevertheless, the impact of the surgeon’s experience on the complication rates in VLP fixation remains to be determined, particularly for less-experienced surgeons. This study compared the complication rates during the initial four years and subsequent two years of a hand surgeon’s practice of VLP fixation for DRFs.
Materials and Methods
The data between March 2016 and December 2022 were analyzed retrospectively under the Institutional Review Board approval. A single surgeon performed all VLP fixation surgeries after finishing regular hand surgery training, with the first four years representing the less experienced phase (Group 1) and the following two years indicating the experienced phase (Group 2). The patients’ characteristics, operation-related factors, and postoperative complications, including tendon injuries, nerve-related complications, fixation and instrument-related issues, osteosynthesis-related problems, and infections, were compared. In addition, the authors compared the data with a large multicenter study conducted by experienced hand surgeons.
Results
Three hundred and nineteen patients (321 wrists) were included. The mean age was 63.3 years, and 26.3% were male and 73.7% were female. The operation time was 53.7±14.5 minutes and 74.4±26.5 minutes in groups 1 and 2, respectively, which was statistically significantly shorter (p<0.001). The complication rates between the two groups were similar, except for the higher implant removal rates in Group 1. A comparison with a previous multicenter study revealed higher reduction losses and carpal tunnel syndrome in this study, but the overall complication rate was low.
Conclusion
In DRF management, when the operating surgeon has completed an accredited training course, VLP fixation is a good treatment method that can be performed effectively even by less experienced surgeons with low complication rates.

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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
Journal of Musculoskeletal Trauma.2026; 39(1): 12. CrossRef
Author correction: “Does the operator's experience affect the occurrence of complications after distal radius fracture volar locking plate fixation? A comparative study of the first four years and thereafter”
Kee-Bum Hong, Chi-Hoon Oh, Chae Kwang Lim, Sungwoo Lee, Soo-Hong Han, Jun-Ku Lee
Journal of Musculoskeletal Trauma.2025; 38(1): 40. CrossRef
Characteristics of patients with distal radius fracture requiring arthroscopic foveal repair after bone union
Min Jung Park, Cheungsoo Ha, Hyun Tak Kang, Yong Hyun Yoon, Jun-Ku Lee, Soo-Hong Han
Arthroscopy and Orthopedic Sports Medicine.2025; 12(2): 70. CrossRef

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Current concepts and applications of bone graft substitutes in orthopedic surgery: Jae Ho Cho, Hyung Keun Song; J Musculoskelet Trauma 2025;38(4):169-177. Published online October 24, 2025; DOI: https://doi.org/10.12671/jmt.2025.00248

Abstract PDF

Bone defects, which often arise from high-energy injuries, infections, tumor resections, or nonunions, represent a persistent challenge in orthopedic trauma surgery. Autologous bone grafting remains the gold standard due to its unique combination of osteogenic, osteoinductive, and osteoconductive properties. However, issues such as donor site morbidity, limited graft volume, and increased surgical time have driven the development of bone graft substitutes. These substitutes vary widely in origin, composition, biological activity, and mechanical characteristics, encompassing allografts, xenografts, synthetic materials, and biologically enhanced constructs. This review outlines the fundamental biological principles underlying bone regeneration—including osteogenesis, osteoinduction, and osteoconduction—and addresses additional key factors such as biocompatibility, biodegradability, and mechanical strength. Current bone graft materials are classified by biological origin and functional characteristics, with an emphasis on their use in trauma surgery. Particular attention is given to the clinical applications, indications, and limitations of allograft-based solutions (such as structural allografts and demineralized bone matrix), synthetic ceramics (including calcium phosphate and bioactive glass), and biologically enhanced options, such as recombinant growth factors and stem cell therapies. In trauma settings, graft selection must be tailored to the characteristics of the defect, mechanical demands, the biological environment, and patient-specific factors. Integration with surgical technique and fixation is crucial for optimizing outcomes. Although modern substitutes show promise, none fully replicate the complex biology of autografts. Looking ahead, emerging technologies such as 3D printing, nanotechnology, and smart biomaterials offer exciting possibilities but face translational challenges. This review aims to provide practicing orthopedic surgeons with a concise, evidence-based overview of bone substitute options and their roles in trauma care. By applying core biological principles and clinical judgment, surgeons can better navigate the expanding array of graft materials to improve outcomes for patients with complex skeletal defects.

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Safety and Efficacy of rhBMP-2 for Treating Acute Traumatic Fractures of the Upper and Lower Extremities: A Multicenter Prospective Study
Seungyeob Sakong, Seokjun Hong, Wonseok Choi, Seonghyun Kang, Jae-Woo Cho, Whee Sung Son, Jeong-Seok Choi, Chang-Jin Yon, Won-Tae Cho, Jong-Keon Oh
Journal of Clinical Medicine.2026; 15(3): 1176. CrossRef
Plasma‐Assisted KR‐12 Conjugated PLGA Nanofibers With Dual Osteogenic and Biofilm‐Inhibitory Activity
Günnur Pulat, Eda Bilgiç, Buse Sezer
Journal of Biomedical Materials Research Part A.2026;[Epub] CrossRef

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Fracture-related infections: a comprehensive review of diagnosis and prevention: HoeJeong Chung, Hoon-Sang Sohn; J Musculoskelet Trauma 2025;38(2):86-95. Published online April 25, 2025; DOI: https://doi.org/10.12671/jmt.2025.00164

Abstract PDF

Fracture-related infections are challenging complications in orthopedic trauma that often require prolonged treatment and impose a significant healthcare burden. Accurate diagnosis and effective prevention strategies are essential for minimizing their occurrence. A recent international consensus has established standardized diagnostic criteria based on clinical, microbiological, radiological, and histopathological findings. Prevention is the top priority and involves a thorough preoperative risk assessment, along with glycemic control, nutritional optimization, and management of comorbidities, as well as intraoperative and postoperative measures such as appropriate antibiotic prophylaxis, surgical site antisepsis, and meticulous wound care. A multidisciplinary approach involving orthopedic surgeons, infectious disease specialists, and microbiologists is crucial for successfully reducing the burden of fracture-related infections.

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Personalized Approaches to Diagnostic and Therapeutic Strategies in Periprosthetic Fracture-Related Infections (PFRIs): Case Series and Literature Review
Marianna Faggiani, Marco Zugnoni, Matteo Olivero, Salvatore Risitano, Giuseppe Malizia, Silvia Scabini, Marcello Capella, Stefano Artiaco, Simone Sanfilippo, Alessandro Massè
Journal of Personalized Medicine.2025; 15(12): 576. CrossRef
Pathogen-Specific Risk for Iterative Surgical Debridement in Orthopedic Infections: A Prospective Multicohort Analysis
Flamur Zendeli, Anna Jędrusik, Raymond O. Schaefer, David Albrecht, Michael Betz, Felix W. A. Waibel, Tanja Gröber, Nathalie Kühne, Sören Könneker, İlker Uçkay
Journal of Clinical Medicine.2025; 14(24): 8750. CrossRef

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How to obtain the desired results from distal tibial nailing based on anatomy, biomechanics, and reduction techniques: Jungtae Ahn, Se-Lin Jeong, Gu-Hee Jung; J Musculoskelet Trauma 2025;38(2):74-85. Published online March 31, 2025; DOI: https://doi.org/10.12671/jmt.2025.00024

Abstract PDF

Distal tibial metaphyseal fractures are commonly caused by high-energy injuries in young men and osteoporosis in older women. These fractures should be clearly distinguished from high-energy pilon fractures. Although the optimal surgical intervention methods for distal tibial metaphyseal fractures remain uncertain and challenging, surgical treatments for nonarticular distal tibia fractures can be broadly divided into two types: plate fixation and intramedullary nail (IMN) fixation. Once functional reduction is achieved using an appropriate technique, distal tibial nailing might be slightly superior to plate fixation in reducing postoperative complications. Thus, the surgical strategy should focus on functional realignment and proceed in the following sequence: (1) restoring the original tibial length, regardless of whether fibular fixation is to be done; (2) making the optimal entry point through an anteroposterior (AP) projection based on the overlapping point between the fibular tip and lateral plateau margin; (3) placing Kirschner wires (Ø2.4 mm) as blocking pins (in the AP orientation for coronal control and in the mediolateral [ML] orientation for sagittal control) as close to the upper locking hole as possible without causing further comminution on the concave aspect of the short fragment; and (4) making the the distal fixation construct with at least two ML and one AP interlocking screw or two ML interlocking screws and blocking screws. After the IMN is adequately locked, blocking pins (Ø2.4 mm) need to be replaced by a 3.5 mm screw.

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Rigid intramedullary nailing with suprapatellar approach for tibial shaft fractures in adolescents with open physes
Jong Wha Lee, Jae Ho Cho, Tae Hun Kim, Hyung Keun Song, Won-Tae Cho, Seungyeob Sakong, Hyun Il Choi, Sumin Lim
Injury.2026; 57(4): 113130. CrossRef
Impact of Foot Width on Patient-Reported Outcomes Assessed by 3-Dimensional Foot Morphometry in Hallux Valgus
Jungtae Ahn, Dae-Cheol Nam, Gu-Hee Jung
Clinics in Orthopedic Surgery.2025; 17(6): 1062. CrossRef

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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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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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Treatment of avulsion fractures around the knee: Jeong-Hyun Koh, Hyung Keun Song, Won-Tae Cho, Seungyeob Sakong, Sumin Lim; J Musculoskelet Trauma 2025;38(2):63-73. Published online March 31, 2025; DOI: https://doi.org/10.12671/jmt.2025.00073

Abstract PDF

Avulsion fractures of the knee occur when tensile forces cause a bone fragment to separate at the site of soft tissue attachment. These injuries, which frequently affect adolescent athletes, can involve the cruciate and collateral ligaments, arcuate complex, iliotibial band, and patellar and quadriceps tendons. Radiographs aid in the initial diagnosis, while computed tomography and magnetic resonance imaging facilitate a comprehensive evaluation of injury severity and concomitant damage. Specific avulsion fracture types include: anterior cruciate ligament avulsions (tibial site, Meyers and McKeever classification), posterior cruciate ligament avulsions (tibial attachment, Griffith's classification), Segond fractures (anterolateral complex injury), iliotibial band avulsions, medial collateral ligament avulsions (reverse Segond, Stieda fractures), arcuate complex avulsions ("arcuate sign"), medial patellofemoral avulsions (patellar dislocations), and patellar/quadriceps tendon avulsions. The treatment depends on the fracture location, displacement, and associated injuries. Non-displaced fractures can be managed conservatively, while displaced fractures or those with instability require surgical reduction and fixation. Prompt recognition and appropriate intervention prevent complications such as deformity, nonunion, malunion, and residual instability. This review provides an overview of the pathogenesis, diagnosis, and management of knee avulsion fractures to guide clinical decision-making.

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Lateral marginal fractures of the patella and patellofemoral pain
Jae-Ang Sim, Chul-Ho Kim, Ji Wan Kim
Journal of Musculoskeletal Trauma.2025; 38(3): 152. 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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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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Avulsion Fracture of the Lesser Trochanter and the Use of Conservative Treatment
Dawid Bartosik, Bartlomiej Cwikla, Anna Kowalczyk, Michalina Loson-Kawalec, Anna Palka-Szymaniec, Bartosz Starzynski, Alina Keska, Jakub Szkuta, Klaudia Wojcik
Cureus.2026;[Epub] CrossRef

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Comparison of outcomes of reinforced tension band wiring and precontoured plate and screw fixation in the management of Mayo type IIIB olecranon fractures: Hyun Goo Kang, Tong Joo Lee, Samuel Jaeyoon Won; J Musculoskelet Trauma 2025;38(2):96-101. Published online February 28, 2025; DOI: https://doi.org/10.12671/jmt.2025.00059; Correction in: J Musculoskelet Trauma 2025;38(3):168

Abstract PDF

Background
Mayo type IIIB olecranon fractures are characterized by significant displacement and comminution, presenting a challenge in selecting the appropriate fixation technique. This study compared the clinical and radiographic outcomes, complications, and reoperation rates of reinforced tension band wiring (TBW) and precontoured plate and screw fixation (PF) in the surgical treatment of Mayo type IIIB olecranon fractures.
Methods
This retrospective review analyzed 24 patients diagnosed with Mayo type IIIB olecranon fractures, who were treated between 2005 and 2023. Of these, 11 patients underwent reinforced TBW, and 13 received precontoured PF. Clinical outcomes were assessed using Disabilities of the Arm, Shoulder, and Hand (DASH) scores and the Mayo Elbow Performance Score (MEPS). Radiographic outcomes focused on fracture union. Operative times, complication rates, and reoperation rates were compared between the groups.
Results
Both the reinforced TBW and PF groups achieved satisfactory clinical outcomes, with no significant between-group differences in DASH and MEPS scores (P>0.05). Radiographic union was achieved in all patients. The reinforced TBW group demonstrated a significantly shorter operative time than the PF group (93.6±7.4 min vs. 132.3±13.7 min; P<0.001). Complication rates were similar between the two groups (reinforced TBW, 38.4%; PF, 36.3%), but hardware-related irritation occurred more frequently in the reinforced TBW group. Reoperations were required in 15.8% of the reinforced TBW group due to hardware irritation, whereas no reoperations were necessary in the PF group.
Conclusions
Reinforced TBW and PF are both effective surgical options for managing Mayo type IIIB olecranon fractures, yielding comparable clinical and radiographic outcomes. While reinforced TBW offers shorter operative times and lower costs, PF is associated with fewer hardware-related complications. Further prospective studies are needed to optimize treatment strategies for these complex fractures. Level of Evidence: Level III.

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Are posterior olecranon locking plates a problem for patients after fracture healing because of prominence?
Reva Qiu, Mallika Makkar, Richard Buckley
Injury.2025; 56(11): 112769. CrossRef

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Clinical Outcomes of Triple Tension Band Wirings in Comminuted Patellar Fracture: A Comparison with Conventional Tension Band Wiring: Hyun-Cheol Oh, Han-Kook Yoon, Joong-Won Ha, Sang Hoon Park, Sungwoo Lee; J Korean Fract Soc 2024;37(2):82-86. Published online April 30, 2024; DOI: https://doi.org/10.12671/jkfs.2024.37.2.82

Abstract PDF

Purpose
This study devised triple tension band wirings (TTBW) fixation in patients with comminuted patella fractures to compare the clinical result of TTBW with that of tension band wiring (TBW).
Materials and Methods
This study was conducted on 91 patients who had undergone surgery diagnosed with acute patella fracture from January 2011 to December 2016. The study included 51 double TBW patients (Group 1) and 40 patients with TTBW (Group 2).
Results
Five out of 51 cases had a loss of reduction and fixation failure in Group 1, and no failure of fracture formation healing occurred in Group 2. Nonunion was noted in one case in Group 1 and no case in Group 2. Eight K-wire migration cases were observed in Group 1, which was not observed in Group 2. Six patients in Group 1 underwent revisional surgery. No patients in Group 2 had a reoperation. As a result of a one-year follow-up after the operation, the mean range of motion of the knee joint in groups 1 and 2 was 128.3°±11.3° and 127.9°±10.8°, respectively. The Lysholm’s scores for groups 1 and 2 were 90.8±4.2 and 90.3±3.8 points, respectively, which was not statistically significant.
Conclusion
TTBW is a helpful technique for the surgical treatment of comminuted patella fractures. The TTBW method has less reoperation due to nonunion and fixation failure. After a one-year followup, the clinical results were similar to the conventional TBW method.

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Lateral marginal fractures of the patella and patellofemoral pain
Jae-Ang Sim, Chul-Ho Kim, Ji Wan Kim
Journal of Musculoskeletal Trauma.2025; 38(3): 152. CrossRef

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Biomechanical Investigation to Establish Stable Fixation Strategies for Distal Tibial Fractures in Various Situations: Finite Element Analysis Studies: Sung Hun Yang, Jun Young Lee, Gu-Hee Jung, Hyoung Tae Kim, Ba Woo Ko; J Korean Fract Soc 2024;37(2):71-81. Published online April 30, 2024; DOI: https://doi.org/10.12671/jkfs.2024.37.2.71

Abstract PDF

Purpose
This study examined the structural and mechanical stability as well as the clinical significance of various fixation constructs for distal tibial fractures using finite element analysis.
Materials and Methods
Fracture models with 20 mm and 120 mm defects were produced, and implants of an intramedullary nail and anatomical plate model were applied. An axial load of 800 N with 60% distribution in the medial compartment and 40% in the lateral compartment was applied and analyzed using Ansys^® software.
Results
In the intramedullary nail model, the maximum von Mises stress occurred at the primary lag screw hole and adjacent medial cortex, while in the plate model, it occurred at the locking holes around the fracture. The maximum shear stress on the bone and metal implant in the fracture model with a 20 mm defect was highest in the plate assembly model, and in the fracture model with a 120 mm defect, it was highest in the two-lag screw assembly model.
Conclusion
Based on an analysis of the maximum shear stress distribution, securing the fixation strength of the primary lag screw hole is crucial, and the assembly model of the intramedullary nail with two lag screws and a blocking screw applied was the model that best withstood the optimal load. Securing the locking hole directly above the fracture is believed to provide the maximum fixation strength because the maximum pressure in the plate model is concentrated in the proximal locking hole and the surrounding cortex.

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How to obtain the desired results from distal tibial nailing based on anatomy, biomechanics, and reduction techniques
Jungtae Ahn, Se-Lin Jeong, Gu-Hee Jung
Journal of Musculoskeletal Trauma.2025; 38(2): 74. CrossRef

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Prediction of Syndesmotic Instability according to the Lateral Malleolus Fracture Pattern in Supination-External Rotation Type Ankle Fractures: Short Oblique versus Long Oblique Fracture: Chan-Jin Park, Min-Su Lee, Keun-Bae Lee; J Korean Fract Soc 2024;37(1):39-45. Published online January 31, 2024; DOI: https://doi.org/10.12671/jkfs.2024.37.1.39

Abstract PDF

Purpose
This study examined whether preoperative radiological evaluations can predict syndesmotic instability according to the lateral malleolus fracture pattern in supination-external rotation-type ankle fractures.
Materials and Methods
This study enrolled 132 patients (132 ankles) with supination-external rotation stage 3 and 4 ankle fractures. Three-dimensional computed tomography was used for the morphological classification of the lateral malleolus fractures. A long oblique fracture was defined when the posterior cortical bone height of the fracture was 4.5 cm or more from the plafond of the distal tibial articular surface. A short oblique fracture was defined when the height was less than 4.5 cm. The demographic characteristics and syndesmotic instability of the two groups were evaluated.
Results
Short oblique fractures were confirmed in 102 cases, and long oblique fractures were confirmed in 30 cases. Long oblique fractures occurred at a statistically significantly higher incidence in younger ages and among males compared to short oblique fractures. Syndesmotic instability was more common in long oblique fractures.
Conclusion
In supination-external rotation-type ankle fractures, syndesmotic instability was observed in approximately 13%. Specifically, when the fracture pattern of the lateral malleolus is long oblique, the incidence of syndesmotic instability is approximately three times higher than in short oblique fractures. Therefore, meticulous evaluations of the lateral malleolus fracture pattern and establishing an appropriate treatment plan before surgery are crucial.

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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 stduy
Jong-Eun Kim, Chan-Jin Park, Jun-Young Lee, Keun-Bae Lee, Gun-Woo Lee
Journal of Musculoskeletal Trauma.2025; 38(4): 212. CrossRef

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Triplane Fracture Management: Prediction of Periosteal Entrapment and the Need for Open Reduction by Measurements of the Physeal Fracture Gap in Preoperative Computed Tomography Scans: Dae Hee Lee, Joo Han Kwon, Jae Uk Jung; J Korean Fract Soc 2024;37(1):1-7. Published online January 31, 2024; DOI: https://doi.org/10.12671/jkfs.2024.37.1.1

Abstract PDF

Purpose
This study measured the physeal fracture gap on preoperative ankle computed tomography (CT) to predict the periosteal entrapment that requires an open reduction in distal tibia triplane fractures.
Materials and Methods
This study retrospectively reviewed patients who had undergone internal fixation for a triplane fracture from April 2004 to September 2022. The demographic data, including age,body mass index, and past medical history, were analyzed. In the radiographic evaluations, ankle CT and ankle simple radiographs, including anteroposterior (AP), lateral, and mortise views, were taken preoperatively. Postoperatively, simple ankle radiographs were obtained periodically, including AP, mortise, and lateral views. The physeal fracture gap was measured on ankle CT, and the larger gap between the coronal and sagittal view of CT was selected. The residual physeal gap <2 mm was considered an adequate reduction.
Results
Of 17 cases, three demonstrated successful reduction using closed reduction techniques. Periosteal entrapment was observed in 14 cases open reduction cases. In all three closed reduction cases, the physeal gap estimated on preoperative ankle CT was under 3 mm with a mean gap of 2.4±0.2 mm (range, 2.1-2.5 mm). In the remaining 14 open reduction cases, the measured physeal gap was over 3 mm, averaging 5.0±2.7 mm (range, 3.1-12.2 mm). There was a significant difference in the preoperative physeal gap between the two groups (p<0.01). Overall, good reduction was achieved in all 17 cases; the postoperative physeal gap was under 2 mm with a mean of 1.0±0.5 mm (closed reduction group, 0.5±0.2 mm; open reduction group, 1.1±0.5 mm).
Conclusion
Open reduction is strongly recommended for triplane fractures with a physeal fracture gap of 3 mm or more in preoperative ankle CT, suggesting the possibility of an entrapped periosteum in the fracture gap.

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Diagnostic values of radiographic indices for predicting periosteal entrapment in pediatric proximal phalangeal base physeal fractures of toes
Ho Young Park, Jeong-Seok Moon, Kiwook Kim
Skeletal Radiology.2026; 55(1): 97. CrossRef

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