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Total hip arthroplasty using S-ROM prosthesis for dysplastic hip
Joon Soon Kang1, Kyoung Ho Moon, Ryuh Sup Kim
1Department of Orthopaedic Surgery, Inha University College of Medicine, 7-206 Sinheung-dong 3-ga, Jung-gu, Incheon 400-711, Korea. kangjoon@inha.ac.kr
Purpose:
The purpose of this study was to evaluate the clinical and radiological results of total hip arthroplasty using a proximal modular femoral stem in patients who had secondary coxarthrosis associated with a dysplastic hip.
Materials And Methods:
Forty-two patients (45 hips) with secondary coxarthrosis were evaluated after undergoing primary total hip arthroplasty using an S-ROM proximal modular femoral stem. The average follow-up was 80 months (range: 60 to 96 months). Clinical and radiological assessments were performed based on the Harris hip score and the radiological changes around the prosthesis.
Results:
The average Harris hip score improved from 52.2 points to 88.5 points. All femoral stems showed stable fixation; there were 37 cases by bony ingrowth and 8 cases by stable fibrous ingrowth. Neither osteolysis nor progressive radiolucent lines around the femoral stem were found at the last follow-up. Forty-one hips (91.9%) revealed excellent or good clinical results at the most recent follow-up.
Conclusion:
For advanced secondary coxarthrosis, total hip arthroplasty with the use of the proximal modular femoral stem yielded good mid-term results with respect to the clinical and radiological criteria.
