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  • Title: Effect of partial release of the posterior cruciate ligament in total knee arthroplasty.
    Author: Arima J, Whiteside LA, Martin JW, Miura H, White SE, McCarthy DS.
    Journal: Clin Orthop Relat Res; 1998 Aug; (353):194-202. PubMed ID: 9728174.
    Abstract:
    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.
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