Lewallen D G, Bryan R S, Peterson L F
J Bone Joint Surg Am. 1984 Oct;66(8):1211-8.
After review of the first 209 polycentric total knee arthroplasties (in 159 patients) performed at the Mayo Clinic between July 1970 and November 1971, we found that the calculated probability of the arthroplasty remaining successful ten years postoperatively was 66 per cent. Actual results showed 42 per cent of the arthroplasties to be successful in patients who were still alive at review; another 24 per cent were successful but were in patients who had died or were lost to follow-up before ten years postoperatively. In 34 per cent failure occurred, which we defined as reoperation for any reason, unacceptable pain, or loss of function. The most common causes of failure were instability or ligament laxity (13 per cent), loosening of a component (7 per cent), infection (3 per cent), and patellofemoral joint pain (4 per cent). Prior knee surgery significantly decreased the probability of success, as did axial malalignment of the prosthetic components at operation.
在回顾1970年7月至1971年11月在梅奥诊所进行的首批209例（涉及159名患者）多中心全膝关节置换术后，我们发现，术后十年关节置换仍保持成功的计算概率为66%。实际结果显示，在复查时仍存活的患者中，42%的关节置换成功；另有24%的关节置换成功，但患者在术后十年前死亡或失访。34%的病例出现失败，我们将失败定义为因任何原因进行再次手术、出现无法接受的疼痛或功能丧失。最常见的失败原因是不稳定或韧带松弛（13%）、部件松动（7%）、感染（3%）以及髌股关节疼痛（4%）。既往膝关节手术以及手术时假体部件的轴向排列不齐均显著降低了成功的概率。
