Lettin A W, Kavanagh T G, Craig D, Scales J T
J Bone Joint Surg Br. 1984 May;66(3):355-61. doi: 10.1302/0301-620X.66B3.6725345.
We review 210 Stanmore knee replacements in 163 patients to assess the survival of the prostheses and the long-term results. The annual rate of failure reached a maximum of 4.6% in the fourth year after operation; thereafter it declined to reach zero by the eighth year. Between two and eight years after operation, 66.3% of the surviving knees were completely free of pain and 30.2% had mild retropatellar pain. Fixed flexion deformities present before operation were completely corrected in 73% of the knees, and varus or valgus deformities were invariably corrected. Stability was always restored to unstable knees and 80.8% of knees flexed to 90 degrees or more after replacement. Aseptic loosening (8.1%), prosthetic infection (4.3%) and femoral fracture (2.9%) led to 8.5% of the prostheses being revised or removed over eight years. Modifications in prosthetic design and operative techniques have been introduced to minimise such complications in the future.
我们回顾了163例患者的210例Stanmore膝关节置换手术，以评估假体的生存率和长期效果。术后第四年，假体的年失败率最高达到4.6%；此后逐渐下降，到第八年降至零。术后两到八年，66.3%的存活膝关节完全无痛，30.2%有轻度髌后疼痛。术前存在的固定屈曲畸形在73%的膝关节中得到完全纠正，内翻或外翻畸形均得到矫正。不稳定膝关节的稳定性总能恢复，置换后80.8%的膝关节能屈曲至90度或以上。无菌性松动（8.1%）、假体感染（4.3%）和股骨骨折（2.9%）导致8.5%的假体在八年内进行翻修或取出。目前已对假体设计和手术技术进行改进，以尽量减少未来此类并发症的发生。
