Larson R L
Clin Orthop Relat Res. 1980 Mar-Apr(147):68-75.
A knee with a combination of instabilities in very difficult to restore to a completely stable condition. The ligamentous structure of the knee is a functional unit. Laxity in any of the planes of the knee motion can produce increased stretching and stress to the structures, which help to provide stability in the other planes. Since it is almost impossible to restore the knee to the pre-injury state, residual laxity in different planes of motion is going to produce increasing stress to the other components, which may have been restored to a greater degree of stability. This emphasizes the importance of a good muscular rehabilitation program and a dynamic component to knee reconstructive procedures to protect against this eventuality. Passive laxity, if present, should not be taken as a sign of failure of the procedure. Often the patient's assessment of his functional capabilities have improved after the reconstructive procedures.
一个存在多种不稳定因素组合的膝盖很难恢复到完全稳定的状态。膝盖的韧带结构是一个功能单元。膝盖运动任何平面的松弛都会对有助于在其他平面提供稳定性的结构产生更大的拉伸和压力。由于几乎不可能将膝盖恢复到受伤前的状态，不同运动平面的残余松弛会对其他已恢复到更高稳定程度的组件产生越来越大的压力。这强调了良好的肌肉康复计划以及膝盖重建手术中动态组件对于预防这种情况的重要性。如果存在被动松弛，不应将其视为手术失败的迹象。通常，重建手术后患者对其功能能力的评估会有所改善。
