Journal of Musculoskeletal Trauma

Original Articles

Total Hip Arthroplasty Following Acetabular Fracture: Myung Chul Yoo, Yoon Je Cho, Kang Il Kim, Young Soo Chun, Dong Oh Ko, Jin Woong Yi; J Korean Soc Fract 2003;16(2):121-127. Published online April 30, 2003; DOI: https://doi.org/10.12671/jksf.2003.16.2.121

Abstract PDF: PURPOSE
We evaluated the results of secondary total hip arthroplasty (THA) after acetabular fracture. MATERIAL & METHODS: Twenty cases of THA were performed to treat acetabular fracture as a secondary treatment after conservative management (6 cases) or internal fixation (14 cases). The mean follow up period was 5 years 2 months. The cause of secondary THA was post traumatic arthritis in 15 hips and osteonecrosis of the femoral head in 5. Cementless acetabular cup was used in 18 cases and cemented in 2 cases. Cementless femoral component was used in 18 cases and cemented in 2 cases. Serial Harris hip score (HHS), pain, limb length discrepancy and radiographs were evaluated.
RESULTS
HHS improved from 57 points to 91 points. Osteolysis in the acetabular component occurred in 2 cases and 5 cases in the femoral component. Loosening occurred in 2 cases of cemented acetabular components and 1 case in the femoral component. In this study, 3 cases (15%) required revision of the acetabular component and 2 cases (10%) of the femoral component.
CONCLUSION
The clinical results of THA after acetabular fracture was inferior to that of conventional arthroplasty. The secure cementless acetabular fixation with proper bone grafting is mandatory to improve the survival of acetabular component.

MRI Findings of Stress Fracture in Long Bone: Sung Ho Hahn, Bo Kyu Yang, Seung Rim Yi, Shun Wook Chung, Yang Hee Park, Dong Oh Ko; J Korean Soc Fract 2001;14(2):145-151. Published online April 30, 2001; DOI: https://doi.org/10.12671/jksf.2001.14.2.145

Abstract PDF: PURPOSE
The goal of our study was to evaluate diagnosis and management of stress fracture in long bones using MRI findings. MATERIAL & METHOD: Between May 1995 to May 1999, 40 patients( 45 cases ) were confirmed to have a stress fracture by clinical and radiological findings. All patients were evaluated with clinical, X-ray, bone scan, and MRI findings. The patient was 21 years in average( range from 18 to 23 years ). All were males and soldiers. The evaluation was made by comparison of MRI and plain radiograph, and duration of symptom was evaluated with MRI grading by Fredericson et al.
RESULT
The locations of stress fracture of long bones were tibia(n=25), fibula(n=14), and femur(n=6). MRI findings were bone marrow edema in 38(84.4%)cases, intramedullary low signal intensity band in 19(42.2%)cases which was continuous with cortex and cortical fracture line. Periosteal reaction was seen in 45(100%)cases and surrounding soft tissue edema in 20(44.4%)cases. Plain X-ray findings were peristeal reaction in 31( 68.9%)cases, medullary sclerosis in 10(22.2%)cases, and cortical fracture line in 8(17.8%) cases. Duration of symptom was longer in higher MRI grade.
CONCLUSION
MRI was more useful in early diagnosis and differential diagnosis of stress fracture, showing various findings than plain radiograph. MRI grading was helpful in planning tlhe therapy of stress fracture.

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