Metal on Metal Surface Replacement of Hip in Young Patients with Rheumatoid Arthritis of Aseptic Necrosis of Femoral Head / 复旦学报（医学版）

ABSTRACT

PurposePresent study investigated the role of metal on metal surface replacement of the hip in treating the young patients suffering rheumatoid arthritis or aseptic necrosis of femoral head.Methods Between Jan. 1995 and Dec. 1996.16 patients with 17 hips( rheumatoid arthritis 14, aseptic necrosis of femoral head 3) were resurfaced with hybrid metal on metal surface replacement prothesis. Patients were evaluated by self assessment form,hip function examination. Radiographs and Harris hip score. The average follow up time was 58.2 months. ResultsNo patient received revision. Radiographs showed that all implants were in position satisfyingly. No loosening were revealed. The result of self assessment showed that patients were satisfied with 16 hips. The Harris score rose from preoperative 44(31 - 52) to postoperative 91 (79- 96). ConclusionsThe metal on metal surface replacement of hip is a useful treatment to release pain and keep the hip function of young patients suffering rheumatoid arthritis or aseptic necrosis of femoral head.