Background : satisfactory intermediate and long - term results of rotational acetabular osteotomy for the treatment of early osteoarthritis secondary to deelopmental dysplasia of the hip hae been reported 背景：已有报道髋臼旋转截骨术治疗继发于进展型髋发育不良的早期骨关节炎有着良好的中远期疗效。
Methods ( l ) to measure the acetabular wear with special computer soft ware program for 84 cases of femoral head replacement arthroplasties 1 - 6 years after the operation and to analyze the radiological acetabular wear with the clinical results 材料与方法( 1 )利用计算机数字化方法计测84例人工股骨头假体置换后1 - 6年髋臼的磨损，并对其磨损的临床和放射学检查结果进行分析。
