Background: Acetabular fractures are rare and challenging to treat, and the surgeon’s learning curve for managing these fractures is steep. The incidence of acetabular fractures is low, making it difficult to conduct single-surgeon, single-center studies.Therefore, multi-surgeon and multi-center studies may produce inconsistent outcomes compared to those of single-surgeon, singlecenter studies. According to the authors’ literature investigation, single-surgeon, single-center, large-scale studies on this topic are lacking. Thus, this study investigated the radiological and functional outcomes and prognostic factors in patients with displaced acetabular fractures treated by a single surgeon at a single center and followed up for at least 1 year. Methods: This retrospective study was conducted on 149 patients treated for acetabular fractures at Chungbuk national university hospital between January 2005 and December 2021. Demographic data, time to surgery, and complications were collected using medical records. The Judet and Letournel classification was confirmed using preoperative radiographs, and Matta’s quality of reduction was confirmed using immediate postoperative radiographs. At the latest outpatient follow-up, Matta’s radiological outcome grading and the modified Postel Merle d’Aubigné score were confirmed as radiological and functional outcomes, respectively. Results: The radiological outcome was excellent or good in 131 patients (87.9%) and fair or poor in 18 (12.1%) and influenced by age (p = 0.009), quality of reduction (p < 0.001), and the Judet and Letournel classification (p = 0.025). Functional outcome was excellent or good in 121 patients (81.2%) and fair or poor in 28 (18.8%); this was influenced by the quality of reduction (p < 0.001) and the Judet and Letournel classification (p = 0.030). Conclusions Our radiological and functional outcomes of acetabular fractures were comparable with those of other singlesurgeon, single-center studies regarding the follow-up period. Poor prognostic factors for radiological outcomes included age > 65 years, associated patterns, and poor quality of reduction. Associated patterns and poor quality of reduction were factors associated with poor functional outcomes.

Background: Acetabular fractures are rare and challenging to treat, and the surgeon’s learning curve for managing these fractures is steep. The incidence of acetabular fractures is low, making it difficult to conduct single-surgeon, single-center studies.Therefore, multi-surgeon and multi-center studies may produce inconsistent outcomes compared to those of single-surgeon, singlecenter studies. According to the authors’ literature investigation, single-surgeon, single-center, large-scale studies on this topic are lacking. Thus, this study investigated the radiological and functional outcomes and prognostic factors in patients with displaced acetabular fractures treated by a single surgeon at a single center and followed up for at least 1 year. Methods: This retrospective study was conducted on 149 patients treated for acetabular fractures at Chungbuk national university hospital between January 2005 and December 2021. Demographic data, time to surgery, and complications were collected using medical records. The Judet and Letournel classification was confirmed using preoperative radiographs, and Matta’s quality of reduction was confirmed using immediate postoperative radiographs. At the latest outpatient follow-up, Matta’s radiological outcome grading and the modified Postel Merle d’Aubigné score were confirmed as radiological and functional outcomes, respectively. Results: The radiological outcome was excellent or good in 131 patients (87.9%) and fair or poor in 18 (12.1%) and influenced by age (p = 0.009), quality of reduction (p < 0.001), and the Judet and Letournel classification (p = 0.025). Functional outcome was excellent or good in 121 patients (81.2%) and fair or poor in 28 (18.8%); this was influenced by the quality of reduction (p < 0.001) and the Judet and Letournel classification (p = 0.030). Conclusions Our radiological and functional outcomes of acetabular fractures were comparable with those of other singlesurgeon, single-center studies regarding the follow-up period. Poor prognostic factors for radiological outcomes included age > 65 years, associated patterns, and poor quality of reduction. Associated patterns and poor quality of reduction were factors associated with poor functional outcomes.

Background: Acetabular fractures are rare and challenging to treat, and the surgeon’s learning curve for managing these fractures is steep. The incidence of acetabular fractures is low, making it difficult to conduct single-surgeon, single-center studies.Therefore, multi-surgeon and multi-center studies may produce inconsistent outcomes compared to those of single-surgeon, singlecenter studies. According to the authors’ literature investigation, single-surgeon, single-center, large-scale studies on this topic are lacking. Thus, this study investigated the radiological and functional outcomes and prognostic factors in patients with displaced acetabular fractures treated by a single surgeon at a single center and followed up for at least 1 year. Methods: This retrospective study was conducted on 149 patients treated for acetabular fractures at Chungbuk national university hospital between January 2005 and December 2021. Demographic data, time to surgery, and complications were collected using medical records. The Judet and Letournel classification was confirmed using preoperative radiographs, and Matta’s quality of reduction was confirmed using immediate postoperative radiographs. At the latest outpatient follow-up, Matta’s radiological outcome grading and the modified Postel Merle d’Aubigné score were confirmed as radiological and functional outcomes, respectively. Results: The radiological outcome was excellent or good in 131 patients (87.9%) and fair or poor in 18 (12.1%) and influenced by age (p = 0.009), quality of reduction (p < 0.001), and the Judet and Letournel classification (p = 0.025). Functional outcome was excellent or good in 121 patients (81.2%) and fair or poor in 28 (18.8%); this was influenced by the quality of reduction (p < 0.001) and the Judet and Letournel classification (p = 0.030). Conclusions Our radiological and functional outcomes of acetabular fractures were comparable with those of other singlesurgeon, single-center studies regarding the follow-up period. Poor prognostic factors for radiological outcomes included age > 65 years, associated patterns, and poor quality of reduction. Associated patterns and poor quality of reduction were factors associated with poor functional outcomes.

Background: Acetabular fractures are rare and challenging to treat, and the surgeon’s learning curve for managing these fractures is steep. The incidence of acetabular fractures is low, making it difficult to conduct single-surgeon, single-center studies.Therefore, multi-surgeon and multi-center studies may produce inconsistent outcomes compared to those of single-surgeon, singlecenter studies. According to the authors’ literature investigation, single-surgeon, single-center, large-scale studies on this topic are lacking. Thus, this study investigated the radiological and functional outcomes and prognostic factors in patients with displaced acetabular fractures treated by a single surgeon at a single center and followed up for at least 1 year. Methods: This retrospective study was conducted on 149 patients treated for acetabular fractures at Chungbuk national university hospital between January 2005 and December 2021. Demographic data, time to surgery, and complications were collected using medical records. The Judet and Letournel classification was confirmed using preoperative radiographs, and Matta’s quality of reduction was confirmed using immediate postoperative radiographs. At the latest outpatient follow-up, Matta’s radiological outcome grading and the modified Postel Merle d’Aubigné score were confirmed as radiological and functional outcomes, respectively. Results: The radiological outcome was excellent or good in 131 patients (87.9%) and fair or poor in 18 (12.1%) and influenced by age (p = 0.009), quality of reduction (p < 0.001), and the Judet and Letournel classification (p = 0.025). Functional outcome was excellent or good in 121 patients (81.2%) and fair or poor in 28 (18.8%); this was influenced by the quality of reduction (p < 0.001) and the Judet and Letournel classification (p = 0.030). Conclusions Our radiological and functional outcomes of acetabular fractures were comparable with those of other singlesurgeon, single-center studies regarding the follow-up period. Poor prognostic factors for radiological outcomes included age > 65 years, associated patterns, and poor quality of reduction. Associated patterns and poor quality of reduction were factors associated with poor functional outcomes.

Femoral head fractures combined with hip dislocation are very rare injuries. In most cases, they result from high-energy trauma to the hip or lower extremity during traffic accidents. Various therapy options have been suggested to treat these injuries. Especially, different joint-preserving surgical options have been described for the treatment of traumatic osteochondral injury of the femoral head in young, active patients. In this report, we present a case that a traumatic osteochondral lesion to the femoral head after hip dislocation was treated with osteochondral autografts (OATS) from the non-weight-bearing area of the ipsilateral inferior femoral head through a surgical hip dislocation. After 1 year, the clinical and radiological outcome was satisfactory with no evidence of posttraumatic osteoarthritis and no pain of patients.

Objective: To determine the factors affecting the amount of weight-bearing during gait training in the elderly patients who underwent internal fixation after femur or pelvic fractures and how well they performed the weight-bearing restriction as directed by the physiatrist. Methods: In this retrospective chart review study, we measured the amount of weight-bearing on the affected side in 50 patients undergoing internal fixation surgery and rehabilitation after femur or pelvic fracture using a force plate. Patients receiving non-weight-bearing or partial weight-bearing education were considered to perform weight-bearing restriction well when the amount of weight-bearing was <50 lb. Furthermore, regression analysis was performed to determine the effects of postoperative complications, age, cognitive function, and pain on weightbearing restriction. Results: Variables affecting the amount of weight-bearing were age (r=0.581, p<0.001), weight-bearing education type (r=0.671, p<0.001), manual muscle strength of hip flexion on the non-affected side (r=-0.296, p=0.037), hip abduction (r=-0.326, p=0.021), knee extension (r=-0.374, p=0.007), ankle plantar flexion (r=-0.374, p=0.008), right hand grip strength (r=-0.535, p<0.001), Korean version of Mini-Mental State Examination (r=-0.496, p<0.001), Clinical Dementia Rating (r=0.308, p=0.03), and pain visual analog scale scores (r=0.318, p=0.024). The significant predictor of the amount of weight-bearing among these variables was age (β=0.448, p=0.001). The weight-bearing restriction adherence rate was significantly lower, at 22%, for patients aged ≥65 years as compared to 73% for those <65 years. Conclusion Age was a major variable affecting the amount of weight-bearing. Compliance with weight-bearing restriction was significantly lower in patients aged ≥65 years than in patients <65 years.

Background: The fatality rate of patients with coronavirus disease 2019 (COVID-19) varies among countries owing to demographics, patient comorbidities, surge capacity of healthcare systems, and the quality of medical care. We assessed the clinical outcomes of patients with COVID-19 during the first wave of the epidemic in Korea. Methods: Using a modified World Health Organization clinical record form, we obtained clinical data for 3,060 patients with COVID-19 treated at 55 hospitals in Korea. Disease severity scores were defined as: 1) no limitation of daily activities; 2) limitation of daily activities but no need for supplemental oxygen; 3) supplemental oxygen via nasal cannula; 4) supplemental oxygen via facial mask; 5) non-invasive mechanical ventilation; 6) invasive mechanical ventilation; 7) multi-organ failure or extracorporeal membrane oxygenation therapy; and 8) death. Recovery was defined as a severity score of 1 or 2, or discharge and release from isolation. Results: The median age of the patients was 43 years of age; 43.6% were male. The median time from illness onset to admission was 5 days. Of the patients with a disease severity score of 3–4 on admission, 65 (71.5%) of the 91 patients recovered, and 7 (7.7%) died due to illness by day 28. Of the patients with disease severity scores of 5–7, 7 (19.5%) of the 36 patients recovered, and 8 (22.2%) died due to illness by day 28. None of the 1,324 patients who were < 50 years of age died; in contrast, the fatality rate due to illness by day 28 was 0.5% (2/375), 0.9% (2/215), 5.8% (6/104), and 14.0% (7/50) for the patients aged 50–59, 60–69, 70–79, and ≥ 80 years of age, respectively. Conclusion In Korea, almost all patients of < 50 years of age with COVID-19 recovered without supplemental oxygen. In patients of ≥ 50 years of age, the fatality rate increased with age, reaching 14% in patients of ≥ 80 years of age.

PURPOSE: This study was performed to compare between open reduction/internal fixation (ORIF) and minimally invasive plate osteosynthesis (MIPO) using a 3-dimensional printing model for displaced clavicular fractures. MATERIALS AND METHODS: In a retrospective study, we compared the outcomes of 21 patients treated with MIPO (Group A) with those of 22 patients treated with ORIF (Group B) between January 2013 and December 2015. After the operation, bone union was evaluated using X-ray every 4 weeks. The radiologic outcome (bone union), functional outcome (Korean shoulder scale [KSS], The University of California Los Angeles [UCLA] score), scar length, and degree of satisfaction were evaluated. RESULTS: The mean time to union was 12.1 weeks in Group A and 12.8 weeks in Group B (p=0.524). There was no significant difference in the KSS score and UCLA score between the two groups (p=0.478, p=0.698). The mean length of scar was 4.9 cm (medial 2.6 cm, lateral 2.3 cm) in Group A and 9.7 cm in Group B (p=0.001), and Group A was more satisfied than Group B with respect to scarring (p=0.001). Nonunion developed in one case in each group. Five patients in Group B had skin numbness (1 in Group A, p=0.038). CONCLUSION: There were no significant differences in the radiologic and functional results between the two groups with respect to displaced clavicle shaft fracture. However, scar satisfaction was higher in MIPO than in ORIF.
Bone Plates ; California ; Cicatrix ; Clavicle ; Fracture Fixation ; Humans ; Hypesthesia ; Printing, Three-Dimensional* ; Retrospective Studies ; Shoulder ; Skin

Calcaneal fractures are the most common type of tarsal fracture, and comminuted and bursting fractures are common due to the anatomic characteristics of the calcaneus. Assessment and treatment of calcaneal fractures has improved significantly over time. Despite advancements in surgical techniques and equipment, these fractures remain difficult to treat. In this review article, the physiopathology, classification, and surgical treatments of displaced intra-articular calcaneal fractures are updated.
Calcaneus ; Classification

PURPOSE: The purpose of this study is to evaluate the effects of teriparatide administration on fracture healing after intramedullary nailing in atypical femoral fractures. MATERIALS AND METHODS: We retrospectively reviewed 26 patients (26 cases) with atypical femoral fracture who were treated using intramedullary nailing between January 2009 and December 2013. Teriparatide was not administered to 15 patients (non-injection group) and was administered to 11 patients after surgery (injection group). Clinical results were assessed using the Nakajima score and the visual analogue scale (VAS). Radiographic results were compared for the time of callus formation, callus bridge formation, and bone union between the groups. RESULTS: Time to recover walking ability and to decrease pain in the surgery region (VAS≤2) were significantly shorter in the injection group than in the non-injection group. The time of callus formation, callus bridge formation, and bone union was significantly shorter in the injection group than in the non-injection group. There were 5 cases of delayed bone union (33.3%) and 1 case of none union (6.7%) in the non-injection group and all cases obtained bone union in injection group. CONCLUSION: The injection group showed better clinical and radiographic results than the non-injection group after intramedullary nailing in atypical femoral fracture. Therefore, we think that teriparatide administration after intramedullary nailing could be a useful treatment option to promote bone union.
Bony Callus ; Femoral Fractures* ; Fracture Fixation, Intramedullary* ; Fracture Healing* ; Humans ; Parathyroid Hormone ; Retrospective Studies ; Teriparatide* ; Walking