Use of Bipolar Arthroplaty with Bone Grafts and Reamed Acetabula for Osteoarthritis.

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Bipolar hip arthoroplasty with acetabular reaming for advanced hip osteoarthritis was performed on 25 hips. 19 hips among this series had displastic acetabula and had been treated with autologous bone graft without any screws and pins. The patients had been operated on at 40-76 years of age (average, 52.3 years of age) and had been followed for one year and six months to six years (average, three years and three months) postoperatively.The mean JOA score was improved from preoperative 49.6 to postoperative 86.7. The improvement of pain score was especially remarkable, and an increase of hip ROM was acceptable.X-ray measurement made 1 year postoperatively showed that 76% of the patients had proximal migration, but roentgenogram taken three years postoperatively showed the extent of these migration tended to stop with the appearance of osteosclerotic zone in the circumference of outer head. No distal migration was seen.
西日本整形・災害外科学会の論文

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