Stocks G W, Freeman M A, Evans S J
Royal London Hospital Medical College, England.
J Bone Joint Surg Br. 1995 Nov;77(6):853-61.
We measured the proximal migration of 265 acetabular cups over seven years and correlated the findings with clinical outcome and acetabular revision for aseptic loosening. Cups which eventually became aseptically loose were shown to migrate more rapidly than successful cups. The average proximal migration at two years postoperatively for four groups of cups showed a monotonic relationship to the acetabular revision rate for aseptic loosening at 6.5 years. We conclude that acetabular cups which develop aseptic loosening as evidenced by pain, revision or screw fracture show increased proximal migration by one year, and that the 'migration rate' at two years can be used to predict the acetabular revision rate from aseptic loosening at 6.5 years.
我们对265个髋臼杯进行了为期七年的近端移位测量，并将结果与临床结局以及因无菌性松动而进行的髋臼翻修相关联。最终出现无菌性松动的髋臼杯比成功的髋臼杯移位更快。四组髋臼杯术后两年的平均近端移位与6.5年时因无菌性松动而进行的髋臼翻修率呈单调关系。我们得出结论，出现无菌性松动（以疼痛、翻修或螺钉断裂为证据）的髋臼杯在一年内近端移位增加，并且两年时的“移位率”可用于预测6.5年时因无菌性松动而进行的髋臼翻修率。
