DeLee J G, Charnley J
Clin Orthop Relat Res. 1976 Nov-Dec(121):20-32.
The frequency of radiological demarcation of the cement-bone junction in the acetabulum after total hip replacement has been examined in 141 Charnley low-friction arthroplasties followed for an average of 10.1 years. Sixty-nine per cent showed demarcation of various degrees and 9.2 per cent of the series showed evidence of progressive migration of the socket. The vast majority of cases with demarcation were symptomless. In most cases where demarcation was accompanied by migration the operation notes suggested a technical explanation and in three cases low-grade sepsis was responsible. The fact that nearly 30 per cent of cases showed no demarcation even after 10 years supports the idea that there is no fundamental defect in the principle of employing cement in the acetabulum. Better surgical technique may increase the number of cases showing no demarcation.
在141例Charnley低摩擦人工髋关节置换术中，对髋臼中骨水泥与骨交界处的放射学分界频率进行了检查，这些病例平均随访了10.1年。69%的病例显示出不同程度的分界，该系列中有9.2%的病例显示有髋臼杯渐进性移位的迹象。绝大多数有分界的病例无症状。在大多数分界伴有移位的病例中，手术记录提示了技术方面的解释，有3例是由低度感染引起的。即使在10年后仍有近30%的病例未出现分界，这一事实支持了在髋臼中使用骨水泥的原则没有根本性缺陷这一观点。更好的手术技术可能会增加未出现分界的病例数量。
