Cameron H U, McNeice G M
Arch Orthop Trauma Surg (1978). 1981;98(2):135-8. doi: 10.1007/BF00460801.
In an attempt to define failure modes, a study of 39 knees which failed mechanically has been carried out. In 7 cases failure occurred on the femoral side and in 32 on the tibial side. There was fracture of one femoral component. All femoral loosenings and/or sinkage occurred in malaligned components. Two main tibial failure modes were noted, lateral subluxation of the tibia on the femur leading to loosening and sinkage of the tibial component. Release of popliteus prevents lateral subluxation. Correct component alignment and the use of a large area tibial component resting on the cortices should decrease the incidence of tibial sinkage.
为了确定失效模式，对39例发生机械性失效的膝关节进行了研究。7例失效发生在股骨侧，32例发生在胫骨侧。有一个股骨部件发生了骨折。所有股骨松动和/或下沉均发生在排列不齐的部件中。观察到两种主要的胫骨失效模式，即胫骨在股骨上的外侧半脱位，导致胫骨部件松动和下沉。腘肌松解可防止外侧半脱位。正确的部件对齐以及使用大面积的胫骨部件置于皮质骨上应可降低胫骨下沉的发生率。
