Arima J, Whiteside L A, Martin J W, Miura H, White S E, McCarthy D S
Department of Orthopaedic Surgery, Faculty of Medicine, Kyushu University, Fukuoka, Japan.
Clin Orthop Relat Res. 1998 Aug(353):194-202. doi: 10.1097/00003086-199808000-00022.
Appropriate tension of the posterior cruciate ligament, which often is tight in deep flexion, is difficult to achieve after posterior cruciate ligament retaining total knee arthroplasty. Kinematics and maximum flexion after partial release of the posterior cruciate ligament were evaluated in this study. A partial release improved the maximum flexion angle and maintained anteroposterior stability without causing undesirable changes in kinematics, whereas full resection of the posterior cruciate ligament caused unfavorable anteroposterior instability. Partial posterior cruciate ligament release eliminated excessive rollback movement caused by a tight posterior cruciate ligament and also shifted the point of articular surface contact anteriorly. These results indicate that partial release of the posterior cruciate ligament may improve knee function in patients with a tight posterior cruciate ligament after total knee arthroplasty.
后交叉韧带在深度屈曲时通常处于紧张状态，在保留后交叉韧带的全膝关节置换术后，很难实现合适的张力。本研究评估了后交叉韧带部分松解后的膝关节运动学和最大屈曲度。部分松解可改善最大屈曲角度并维持前后稳定性，而不会引起运动学上的不良变化，而后交叉韧带完全切除则会导致不利的前后不稳定。后交叉韧带部分松解消除了因后交叉韧带紧张引起的过度后滚运动，还使关节面接触点向前移动。这些结果表明，后交叉韧带部分松解可能改善全膝关节置换术后后交叉韧带紧张患者的膝关节功能。
