Cemented Total Hip Arthroplasty in the Rheumatoid Hip.

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  • ＲＡ股に対するセメント固定Ｂｉｏｃｅｒａｍ型ＴＨＡの手術成績

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Abstract

This study was undertaken to assess the clinical and radiographical results of cemented ceramic total hip arthroplasty in rheumatoid arthritis patients. There was a minimum of 2 years of follow-up evaluation. Ninety-six hips in 76 patients were available for follow-up study. Average period after surgery was 7.3 years. Average age of the patients at the time of surgery was 56.0 years (range, 39-81 years) . Nine hips were revised, 7 for mechanical loosening and 2 for late infection. The overall revision rate was 9.4% ; the revision rate for mechanical loosening was 7.3%. According to the JOA hip score, the mean score increased an average of 38.2 points preoperatively to an average of 75.2 points at the last follow-up evaluation. Radiographic evidence of loosening was found in 19 acetabular and 13 femoral components. The Kaplan-Meier survivorship analysis revealed an 87% survival probability at 10 years, which fell to 74% at 15 years. The lower incidence of pain, as well as the increase in functional abilities, suggest that the cemented bioceram THA is a preferable alternative to fixed arthroplasty in patients with rheumatoid arthritis.

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