Journal of Musculoskeletal Trauma

Restoration of Lateral Tibial Plateau Widening and Articular Depression Is Necessary to Prevent Valgus Deformities after Arthroscopic Reduction and Internal Fixation in AO/OTA 41.B2 or B3 Fractures: Jun-Ho Kim, Kang-Il Kim, Sang-Hak Lee, Gwankyu Son, Myung-Seo Kim; J Korean Fract Soc 2024;37(3):125-136. Published online July 31, 2024; DOI: https://doi.org/10.12671/jkfs.2024.37.3.125

Abstract PDF: Purpose
This study examined the factors affecting valgus deformities after arthroscopic reduction and internal fixation (ARIF) in lateral joint-depression tibial plateau fractures.
Materials and Methods
Patients with lateral joint-depression tibial plateau fractures treated with ARIF were assessed retrospectively. The radiological evaluations included the articular depression distance (ADD) and the lateral plateau widening distance (LPWD) on preoperative and postoperative computed tomography. A postoperative valgus deformity was defined as valgus malalignment (mechanical axis ≥3°) and valgus deviation (Δmechanical axis of the operated knee from the healthy knee of ≥5°). Subgroup analyses based on a postoperative valgus deformity were performed to compare the clinical outcomes, including the range of motion, patient-reported outcomes measures, and failure and osteoarthritis progression. Furthermore, factors affecting the postoperative mechanical and Δmechanical axes were assessed.
Results
Thirty-nine patients were included with a mean follow-up of 44.6 months (range, 24-106 months). Valgus malalignment and valgus deviation were observed after ARIF in 10 patients (25.6%) and five patients (12.8%), respectively. The clinical outcomes were similar in patients with and without a postoperative valgus deformity. On the other hand, lateral compartment osteoarthritis progression was significantly higher in the valgus deformity group than in the non-valgus deformity group (valgus malalignment group: 50.0% vs 6.9%, p=0.007; valgus deviation group: 60.0% vs 11.8%, p=0.032). One patient with valgus deformity underwent realignment surgery at postoperative five years. The preoperative ADD and postoperative LPWD were significantly associated with the postoperative mechanical (both, p<0.001) and Δmechanical (ADD, p=0.001; LPWD, p=0.025) axes. Moreover, the lateral meniscectomized status during ARIF was significantly associated with the Δmechanical axis (p=0.019).
Conclusion
Osteoarthritis progression was highly prevalent in patients with postoperative valgus deformity. Thus, the restoration of lateral plateau widening and articular depression and preservation of the meniscus are necessary to prevent a valgus deformity after ARIF in lateral joint-depression tibial plateau fractures.

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Acute Compartment Syndrome of Thigh: Ten-Year Experiences from a Level I Trauma Center: Hyung Keun Song, Won-Tae Cho, Wan-Sun Choi, Seung-Yeob Sakong, Sumin Im; J Musculoskelet Trauma 2024;37(4):171-174. Published online October 25, 2024; DOI: https://doi.org/10.12671/jmt.2024.37.4.171

Abstract PDF: Purpose
To assess the demographics, injury mechanisms, treatments, and outcomes of traumatic acute compartment syndrome in the thigh.
Materials and Methods
Patients diagnosed with thigh compartment syndrome were analyzed retrospectively at the authors’ level I trauma center from March 2012 to February 2022. Data were collected from medical and radiological records, focusing on demographics, injury details, treatment timelines, and clinical outcomes.
Results
The cohort included 13 patients (11 males and 2 females) with a mean age of 46 years. Injuries primarily resulted from falls (6 patients) and vehicle accidents (5 patients). Fractures were noted in 11 patients, with seven involving the lower extremities and seven having open fractures; three of these were severe enough to be classified as Gustilo–Anderson type IIIc with associated femoral artery injuries. Time from the injury to fasciotomy ranged from within six hours to more than 24 hours. Fasciotomies were mainly single-sided (10 patients), targeting primarily the anterior compartments, and bilateral in three cases. Wound closures were performed using delayed primary closure (four patients) and partial- thickness skin grafts (five patients). Two patients died from multi-organ failure; other complications included infections (three patients), amputations (three patients), and long-term disabilities like drop foot (two patients), sensory deficits, joint stiffness (eight patients), and fracture non-unions requiring additional surgery (two patients).
Conclusion
Thigh-compartment syndrome, though infrequent, poses significant risks of mortality and chronic disability. This underscores the importance of prompt diagnosis and intervention.

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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: https://doi.org/

Abstract PDF: 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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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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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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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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Corrigendum: Effect of Additional Medial Locking Plate Fixation and Autogenous Bone Graft for Distal Femur Nonunion after Lateral Locking Plate Fixation: Ho Min Lee, Jong Pil Kim, In Hwa Baek, Han Sol Moon, Seon Gyo Nam; J Korean Fract Soc 2024;37(3):169-169. Published online July 31, 2024; DOI: https://doi.org/10.12671/jkfs.2024.37.3.169

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Fluid Management of Trauma Patients: Yo Huh, Jaeri Yoo; J Korean Fract Soc 2023;36(2):69-76. Published online April 30, 2023; DOI: https://doi.org/10.12671/jkfs.2023.36.2.69

Abstract PDF

Fluid therapy is one of the fundamental treatments for the management of trauma patients. Apart from supplementary hydration, fluid therapy is also applied for resuscitation. Especially in cases of hypovolemic shock due to bleeding, fluid therapy needs to be carefully adjusted to correct the shock. The importance of fluid therapy is increasing not only in resuscitation and treatment after hospitalization but also in pre-hospital care. Fluid therapy needs to be adjusted based depending each patient’s volume status. The various classifications of fluids include crystalloid solutions, glucose solutions, and colloid solutions. Although not included as a fluid therapy, blood transfusion is increasingly gaining more importance than fluid therapy in unstable trauma patients. Early appropriate fluid therapy is crucial in the treatment of hemodynamically unstable patients such as multiple trauma and massive bleeding, whereas comprehensive fluid therapy should be applied by considering the characteristics of specific injuries such as fractures, vascular damage, and cerebral hemorrhage, as well as the age groups (children, the elderly, and pregnant women).

Citations

Citations to this article as recorded by

Effectiveness of the Eye Care Protocol in the Intensive Care Unit Patients: A Randomized Controlled Trial
Kyu Won Lim, Shin Young Ha, In Soon Kang
Journal of Korean Academy of Nursing.2024; 54(3): 432. CrossRef

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Avulsion Fractures of around the Hand: Dong Whan Kim, Jung Il Lee; J Korean Fract Soc 2024;37(3):158-168. Published online July 31, 2024; DOI: https://doi.org/10.12671/jkfs.2024.37.3.158

Abstract PDF: An avulsion fracture occurs when soft tissues, including the tendons and ligaments, are forcibly detached from the main bone by an external force. The hand contains numerous anatomical structures, such as ligaments, tendons, and volar plates, which are essential for maintaining multidirectional motion and joint stability. Excessive force applied in a specific direction can damage these structures, leading to avulsion fractures around the joint. These fractures can result in severe complications if left untreated or improperly managed, including joint deformity, contracture, nonunion or malunion of the fracture, secondary osteoarthritis, and limited range of motion. Therefore, an accurate examination, diagnosis, and appropriate treatment are crucial for preventing these adverse outcomes. An avulsion fracture can be managed conservatively when the avulsed fragment does not compromise joint stability or motion. Nevertheless, surgical intervention is required to stabilize the fragment if it affects joint stability or motion. The use of internal fixation has become more prevalent because of recent advances in small implants for fixation.

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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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Crush Syndrome: Traumatic Rhabdomyolysis, Reperfusion Injury: Yong-Cheol Yoon; J Korean Fract Soc 2023;36(2):62-68. Published online April 30, 2023; DOI: https://doi.org/10.12671/jkfs.2023.36.2.62

Abstract PDF: A crush injury causes damage to bones, muscles, blood vessels, nerves, and other tissues caused due to pressure. Crush syndrome is a reperfusion injury that occurs throughout the body after a crush injury and leads to traumatic rhabdomyolysis, in which muscle fibers are broken down. Owing to the decreased blood supply, inflammation, and changes in metabolic activity, fluids and electrolytes in the blood can move into tissues, causing hypovolemic shock. In addition, toxic substances resulting from cell destruction can circulate through the bloodstream, causing electrolyte imbalances, renal failure, arrhythmias, and cardiac arrest, with approximately 15% of patients with acute renal failure dying. The treatment for crush syndrome involves aggressive fluid therapy and correction of the electrolyte imbalances, while patients with acute renal failure may require dialysis. Surgical treatment may include debridement and irrigation of necrotic tissue, and fasciotomy is necessary to address compartment syndrome, a complication that may arise.

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Comparison of Results between Minimally Invasive Plate Fixation and Antegrade Intramedullary Nailing of Recon-Type in Low-Energy Injury Distal Femoral Shaft Fractures: Hong Moon Sohn, Gwangchul Lee, Ba Rom Kim, Jung Soo Oh; J Korean Fract Soc 2024;37(2):87-94. Published online April 30, 2024; DOI: https://doi.org/10.12671/jkfs.2024.37.2.87

Abstract PDF: Purpose
This study compared the outcomes of minimally invasive plate osteosynthesis and antegrade intramedullary nailing for low-energy fracture of the distal femoral shaft.
Materials and Methods
A study was conducted on 30 patients who underwent surgery for low-energy fractures of the distal femoral shaft between January 2016 and April 2022. The study compared 15patients who underwent minimally invasive plate osteosynthesis (Group P) with 15 patients who underwent recon-type antegrade intramedullary nailing (Group N). We evaluated intraoperative blood loss, operative time, C-arm exposure time, bone density, final union status, anatomical reduction, and clinical evaluation. The complications were also examined, and statistical analysis was conducted to compare the two groups.
Results
The blood loss, surgery time, and C-arm time were similar in the two groups. The radiographic assessments and clinical evaluations were also similar in the two groups. The clinical results showed no difference between the groups. Group N had one case of nonunion and one case of delayed union, while Group P had one case of nonunion and one case of peri-prosthetic fracture.
Conclusion
Antegrade intramedullary nailing of the recon-type demonstrated comparable results to minimally invasive plate osteosynthesis. Hence, antegrade intramedullary nailing of the recon-type, which enhances stability by fixing the entire femur and providing additional fixation in the distal portion, is deemed appropriate for treating distal femoral shaft fractures.

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Avulsion Fractures around the Hip Joint and Pelvis: Ha-Yong Kim, Hajun Jang, Jung-Taek Kim, Jin-Woo Kim, Jun-Il Yoo, Won-Sik Choy, Yonghan Cha; J Korean Fract Soc 2024;37(3):150-157. Published online July 31, 2024; DOI: https://doi.org/10.12671/jkfs.2024.37.3.150

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 the fusion status. Given the diverse muscular structures around the pelvis and hip joint, which serve as origins for multiple muscles leading to the lower extremities, these areas are vulnerable to such injuries. Pelvic avulsion fractures commonly af-fect young athletes, but they can also occur in adults. Diagnosis typically involves assessing the trauma history, clinical examination, and radiographic imaging. In cases of unclear diagnosis, additional tests, such as computed tomography or magnetic resonance imaging, may assist in treatment decisions and diagnosis. Although most avulsion fractures respond well to conservative treatment, surgical interven-tion may be preferred in severe displacements, 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 the characteristic radiological findings based on the pelvic anatomy aids in accurate diagnosis because chronic injuries might mimic tumors or infectious conditions, necessitating a careful differential diagnosis.

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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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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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Computational Simulation of Femoral Neck System and Additional Cannulated Screws Fixation for Unstable Femoral Neck Fractures and the Biomechanical Features for Clinical Applications: Ju-Yeong Kim; J Korean Fract Soc 2023;36(1):1-9. Published online January 31, 2023; DOI: https://doi.org/10.12671/jkfs.2023.36.1.1

Abstract PDF: Purpose
To identify the biomechanical features for clinical applications through a computational simulation of the fixation of the Femoral Neck System (FNS) with additional cannulated screws for a Pauwels type III femoral neck fractures.
Materials and Methods
Thirty cadaveric femurs underwent computed tomography, and the images were transferred to the Mimics^® program, resulting in three-dimensional proximal femur models. A three-dimensional scan of the FNS and 6.5 mm and 7.0 mm cannulated screws was performed to enable computerized virtual fixation of FNS with additional cannulated screws for unstable femoral neck fractures. Furthermore, the cannulated screw used for additional fixation was modeled and used as a cylinder within the Ansys program. The biomechanical characteristics of these models were investigated by applying a physiological load virtually.
Results
The maximum von Mises stress value at bone was 380.14 MPa in FNS and 297.87 MPa in FNS+7.0 mm full-thread cannulated screw. The maximum von Mises stress value at FNS was 786.83 MPa in FNS and 435.62 MPa in FNS+7.0 mm full-thread cannulated screw. The FNS group showed the highest maximum von Mises stress values at bone and FNS. For total deformation, the maximum deformation value was 10.0420 mm in FNS and 9.2769 mm in FNS+7.0 mm full-thread cannulated screws. The FNS group represented the highest maximum deformation compared to the other groups.
Conclusion
Considering the anatomical spatiality and biomechanical characteristics of the FNS in unstable femoral neck fractures, when one 7.0 mm full thread cannulated screw was also fixed to the anterosuperior portion of the FNS, significant biomechanical stability was demonstrated.

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Cephalomedullary Nailing with an Additional Cannulated Screw Fixation in Basicervical Femur Fractures: Keong-Hwan Kim, Woo Dong Nam, Yeon Sik Heo, Gu-Hee Jung; J Korean Fract Soc 2024;37(1):22-29. Published online January 31, 2024; DOI: https://doi.org/10.12671/jkfs.2024.37.1.22

Abstract PDF: Purpose
The purpose of this study is to analyze the clinical results of patients with basicervical fracture undergoing cephalomedullary nailing (CMN) with an additional cannulated screw fixation compared to only performing CMN. We hypothesized that a difference may exist in the clinical outcomes if an ad-ditional screw is fixed with CMN compared to only performing CMN in basicervical fracture.
Materials and Methods
A total of 28 consecutive patients who underwent CMN for basicervical fracture were included. In 9 cases, only CMN was conducted, and in 19 cases, an additional cannulated screw fixation was performed with CMN. Bone union, sliding distance, reduction status, and fixation failure were evaluated by postoperative radiography, and ambulatory ability was evaluated by functional results. These findings were compared between a group of CMN and a group of CMN with an additional cannulated screw.
Results
There were 4 males and 24 females with a mean age of 84 years (range, 69–100 years). No significant difference was found in postoperative reduction, tip-apex distance, bone union, and walking function recovery after surgery between the two groups, but in the sliding distance of the lag screw, the CMN group demonstrated more sliding (6.2 mm [range, 2.5–13.4 mm] vs 3.5 mm [range, 0.1– 9.2 mm]; p=0.045). Among the two groups, only one case of fixation failure at the postoperative four months was observed in the CMN group (p=0.321), and hemiarthroplasty with nail construct removal was performed.
Conclusion
CMN with additional cannulated screw fixation is a safe and reliable surgical option in basicervical fracture. It provided favorable clinical outcomes and may be a good alternative for treating basicervical fracture.

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Single Percutaneous Retrograde Anterior Column Screw Fixation in a Minimally Displaced Transverse Acetabular Fracture - A Case Report -: Seungyup Shin, Jinkyu Park, Sungho Lee; J Korean Fract Soc 2023;36(2):57-61. Published online April 30, 2023; DOI: https://doi.org/10.12671/jkfs.2023.36.2.57

Abstract PDF: According to the Letournel classification, a transverse fracture is the only elementary fracture pattern that breaks both the anterior and posterior border of the innominate bone. A transverse acetabular fracture separates the innominate bone into two segments: the iliac segment and the ischiopubic segment. Therefore, minimally displaced transverse fractures can be stabilized by purchasing both segments with a large-diameter single screw. Although it is not a stable internal fixation construct compared with plates and screws, it provides sufficient stability to promote early mobilization and early weight-bearing while minimizing the risk of secondary displacement and preventing secondary complications associated with prolonged bed rest and immobilization. The authors successfully treated a case of minimally displaced transverse acetabular fracture with percutaneous column fixation using a retrograde fashion of a single anterior column screw. This report discusses the case with a literature review and deliberates the usefulness of the procedure.

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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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The Efficiency of Radiation Shielding Sheet to Reduce Radiation Exposure during C-arm Fluoroscopy: Hosang Jeon, Won Chul Shin, Hee Yun Seol, Yongkan Ki, Kyeong Baek Kim, Ki Seok Choo, Sang Don Lee, Suk-Woong Kang; J Korean Fract Soc 2023;36(4):111-117. Published online October 31, 2023; DOI: https://doi.org/10.12671/jkfs.2023.36.4.111

Abstract PDF: Purpose
This study evaluates the radiation shielding performance of a new lead-free tungsten-based sheet to reduce the radiation exposure of operators and patients under C-arm fluoroscopy.
Materials and Methods
A non-lead radiation shielding sheet (ROO201128; Pentas, Korea) was fabri-cated using tungsten and bismuth. The dose measurements were conducted using a C-arm fluoroscopy machine at 64 kVp and 1.5 mA, assuming two possible scenarios according to the position of the sheet. In each scenario, measurements were conducted at three distances (30, 60, and 90 cm) away from the beam center and in three directions (cephal, caudal, and operator’s direction).
Results
In the area within a radius of 60 cm from the beam center, the measured doses were reduced by 66.3% on mean, and the doses measured at distances more than 60 cm were less than 0.1 mSv/h in both scenarios. The most beneficial utilization of the lead-free shielding sheet was verified during C-arm fluoroscopy by placing the sheet on the X-ray tube. The operator’s radiation exposure was reduced by 56.6% when the sheet was placed under the phantom, and by 81.0% when the sheet was placed on the X-ray tube.
Conclusion
The use of lead-free radiation shielding sheets under C-arm fluoroscopy was effective in reducing radiation exposure, and the most beneficial scenario in which the sheet can be utilized was verified when the sheet was placed on the X-ray tube.

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Risk Factors of Fixation Failure in Femoral Neck Fractures: Sung Hyun Yoon, Kyu Beom Kim, Hyung Jun Lee, Kyung Wook Kim; J Korean Fract Soc 2023;36(4):118-124. Published online October 31, 2023; DOI: https://doi.org/10.12671/jkfs.2023.36.4.118

Abstract PDF: Purpose
Internal fixation after a femoral neck fracture (FNF) is one of the conventional treatment options for the young and active elderly patients. However, fixation failure of internal fixation is a probable complication. The treatment of fixation failure after a primary internal fixation of the FNF remains a challenge.
Materials and Methods
Between July 2002 and March 2017, 83 patients who underwent internal fixation after FNF were retrospectively analyzed. Radiological assessments, including Pauwels’ angle, fracture level, reduction quality, and bone union, were measured, preoperatively and postoperatively. Moreover, intraoperative variables such as time to surgery, surgical time, and estimated blood loss were also evaluated.
Results
The patients were divided into the fixation failure and the non-failure groups. Among the 83 patients, 17 cases (20.5%) of fixation failure after the primary internal fixation of the FNF were identi-fied. When comparing the two groups according to the radiographic data, Pauwels’ angle and the reduction quality based on Garden’s angle showed significant differences (p<0.001). Moreover, when comparing the intraoperative variables, unlike the surgical time and estimated blood loss, significant differences were noted in the time interval from injury to surgery and specifically in whether the surgery was performed within 12 hours after injury (p<0.001).
Conclusion
Pauwels’ angle, reduction quality, and time to surgery are the major factors that can predict the possibility of internal fixation failure of the FNF. Early and accurate anatomical reduction is needed to decrease complications after the internal fixation of the FNF.

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Short-term Treatment Comparison of Teriparatide and Percutaneous Vertebroplasty in Patients with Acute Osteoporotic Vertebral Compression Fractures: Joonoh Seo, Ki Youn Kwon, Bumseok Lee, Hoon-Sang Sohn; J Korean Fract Soc 2024;37(1):15-21. Published online January 31, 2024; DOI: https://doi.org/10.12671/jkfs.2024.37.1.15

Abstract PDF: Purpose
This study compared the 3-month treatment effects of teriparatide and percutaneous vertebroplasty for acute osteoporotic vertebral compression fractures.
Materials and Methods
A retrospective study was conducted on 76 patients diagnosed with acute osteoporotic vertebral compression fractures from January 1, 2020 to December 31, 2022. The patients were divided into the teriparatide group and the percutaneous vertebroplasty+alendronate group. The visual analog scale (VAS), Oswestry disability index (ODI), and height of the vertebrae anterior wall were measured before treatment and at 1 and 3 months after treatment.
Results
Of the 76 patients, 42 were treated with teriparatide, and 34 were treated with percutaneous vertebroplasty. The symptoms improved in both groups, with a decrease in the VAS and ODI scores at 1 and 3 months after treatment, respectively. On the other hand, there was no significant difference in the VAS, ODI score, and anterior vertebral body height between the two groups before treatment and at 1 and 3 months after treatment.
Conclusion
In the treatment of acute osteoporotic vertebral compression fractures, conservative treatment using teriparatide showed similar short-term (3 months) treatment results to percutaneous vertebroplasty in terms of improvement in back pain and function and degree of reduction in anterior vertebral body height.

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Bone Union Time of Simple Distal Femur Fractures in the Elderly according to Fracture Gap after Treated with Minimally Invasive Plate Osteosynthesis: Young Ho Cho, Sangwoo Kim, Jaewook Koo; J Korean Fract Soc 2023;36(4):133-138. Published online October 31, 2023; DOI: https://doi.org/10.12671/jkfs.2023.36.4.133

Abstract PDF: Purpose
This study examined the difference in bone union time according to the fracture gap after minimally invasive plate osteosynthesis (MIPO) for simple distal femoral fractures in elderly patients.
Materials and Methods
From January 2010 to December 2019, patients aged 60 years or older who underwent surgical treatment for distal femoral fractures due to a low-energy injury were investigated retrospectively. Forty patients were enrolled in the study. The patients were divided into two groups according to the fracture gap after reduction: no more than 2 mm (Group A) and more than 2 mm (Group B) in the anteroposterior and lateral plane. The demographic, operation time, presence or absence of cerclage wiring, plate screw density, plate span ratio, plate length, bone union period, non-union, and complications were evaluated.
Results
No statistical differences in operation time, cerclage wiring, plate screw density, plate span ratio, and plate length were observed between the two groups, and the bone union was achieved in all patients without complication. The bone union period was 17.24±1.48 weeks in Group A and 24.53± 5.20 weeks in Group B, which was statistically significant (p<0.001).
Conclusion
The bone union time in treating geriatric simple distal femur fractures using the MIPO tech-nique was significantly shorter in the 2 mm or less fracture gap than in the greater than 2 mm group.

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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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Usefulness of Reduction and Internal Fixation Using a 2.4 mm Hand Plating System in Type AO 33-A3 Distal Femur Fracture - Technical Note -: Bong-Ju Lee, Ja-Yeong Yoon, Seungha Woo; J Korean Fract Soc 2023;36(1):25-28. Published online January 31, 2023; DOI: https://doi.org/10.12671/jkfs.2023.36.1.25

Abstract PDF: Open reduction in an AO 33-A3 class distal femur transverse and comminuted fracture is often difficult due to frequent reduction loss during surgery, leading to longer operative time and increased blood loss intra-operation. In this study, the authors report a case in which the use of an offset grid plate (OsteoMed, USA) using 2.4 mm HPS (hand plating system) eased the process of fracture reduction and achieved a stable internal fixation, ultimately leading to successful osteosynthesis. The authors experienced no need for temporary fixation devices such as K-wires or screws, which are otherwise required to stabilize the reduction. The fracture reduction was stable throughout the primary fixation of the fracture using a locking plate and screws. The authors report that the advantage of the HPS plate is fitting into the cortical contour and providing stable maintenance of fracture reduction intra-operation, which would be beneficial in certain distal femoral fracture patterns.

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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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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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Demographic and Radiographic Parameters as Predictors of Reduction Loss after Conservative Treatment of Distal Radius Fractures in Adults: Kyu Jin Kim, Dae Won Shin, Seong Kee Shin; J Korean Fract Soc 2023;36(2):45-51. Published online April 30, 2023; DOI: https://doi.org/10.12671/jkfs.2023.36.2.45

Abstract PDF: Purpose
This study examined the demographic and radiological risk factors for later reduction loss of distal radius fractures treated conservatively. Materials and Methods This study enrolled patients treated for distal radius fractures between January 2017 and December 2019. Seventy-eight patients were included in the analysis and divided into two groups. The patients who showed minimal reduction loss within an acceptable radiologic angle after initial manual reduction were classified as Group A. The patients who showed reduction loss out of an acceptable radiologic angle and finally malunited or converted to surgical treatments were classified as Group B. The patient’s age and bone marrow density were used as demographic data. The initial X-ray images were evaluated to determine the fracture type. Various radiological parameters were measured. Results The 78-patient study cohort consisted of nine men and 69 women with a mean age of 67 years. Forty-eight cases were sorted into Group A, and 30 cases into Group B. On logistic regression analysis, the age of 80 or older was a risk factor for later fracture displacement among the demographic factors (p=0.037, odds ratio=4.937). Among the radiographic factors, the presence of distal ulnar fracture and dorsal cortical comminution were disclosed as risk factors of later displacement (p=0.049, 0.003, odds ratio=3.429, 7.196). Conclusion When conservative management for distal radius fracture is decided in patients more than 80 years of age or accompanied by a distal ulnar fracture or with dorsal cortical comminution, the possibility of later displacement of the distal radius should be considered.

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Avulsion Fractures in the Ankle and Foot: Gyeong Hoon Lim, Jae Won Kim, Sung Hyun Lee; J Korean Fract Soc 2024;37(2):102-116. Published online April 30, 2024; DOI: https://doi.org/10.12671/jkfs.2024.37.2.102

Abstract PDF: An avulsion fracture occurs when a muscle-tendon unit attached to a bone produces sufficient force to tear a fragment of the bone. If not treated properly, this injury can lead to deformity, nonunion, malunion, pain, and disability. Although avulsion fractures around the foot and ankle can occur anywhere there are tendon and ligament attachments, they are common in the anterior talofibular ligament, anterior-inferior tibiotalar ligament, calcaneal tuberosity, the base of the fifth metatarsal, and navicular bone. The optimal treatment for each fracture depends on the location and severity of the fracture. Conservative treatment involves limiting weight bearing for a period, splint immobilization, and using various orthoses. Surgical treatment is usually reserved for cases of severe displacement or when nonsurgical treatment has failed. The goals of surgery include reduction of the fracture fragment, prevention of nonunion or malunion and soft tissue injury, and early return to function. The decision for each treatment modality may depend on the patient demographics or preferences and the surgeon experience. This review summarizes previous and current views on the pathogenesis, diagnosis, and treatment of common avulsion fractures to guide the treatment and diagnosis.

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The Results of Intramedullary Nailing with Sliding Restriction and Dynamization Method in Treating Intertrochanteric Fractures: Hyun Cheol Oh, Sang Hoon Park, Jae Seok Chae, Han Kook Yoon; J Korean Fract Soc 2024;37(1):8-14. Published online January 31, 2024; DOI: https://doi.org/10.12671/jkfs.2024.37.1.8

Abstract PDF: Purpose
To evaluate the results of intramedullary nailing with sliding restriction and dynamization methods in treating intertrochanteric fractures.
Materials and Methods
From August 2016 to March 2019, patients aged 65 years and older who underwent intramedullary nailing in treating intertrochanteric fractures were enrolled in this study. The radiological and clinical results were analyzed in 49 patients who had undergone lag screw sliding re-striction and dynamization of the distal interlocking screw method.
Results
Forty-seven patients achieved union without complications (95.9%). The mean union period was 6.5 weeks (range, 6-9 weeks). Complications occurred in two patients (4.1%), including the cut through of the lag screw in one patient and varus deformity of more than 10° in the other. The preinjury mean Koval grade was 2.8 (range, 1-7). The mean was 3.3 (range, 1-7) at the final follow-up, and the mean difference was 0.5 (range, 0-2).
Conclusion
Intramedullary nailing with a sliding restriction and dynamization method for treating in-tertrochanteric fractures achieved union. The reduction achieved during surgery was maintained with good clinical results. This method is a safe and effective treatment technique for femoral intertrochanteric fractures.

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