前十字靭帯再建術後の前方動揺性に及ぼす患者側の要因について

Abstract

We performed multivariate analyses on individual factors such as gender, age, preoperative anterior knee laxity, presence of resection of the posterior part of meniscus, and presence of genu recurvatum that may affect anterior knee laxity after anterior cruciate ligament (ACL) reconstruction using the hamstring tendons. Thirty-four males and forty females were included in this study except for patients with multiple ligament injuries of the knee, bilateral or revision ACL reconstruction. All patients underwent identical surgery and were treated with the same postoperative management. Their anterior knee laxity was measured using a KT-1000 arthrometer under manual maximum force before and one year after the reconstruction. The results showed that the regression coefficient was 0.432 and there was significant correlation between postoperative anterior laxity and gender, preoperative anterior laxity, resection of the posterior part of meniscus, and genu recurvatum. From these results, we concluded that it is important to plan graft selection, surgical technique, and postoperative management for each patient to achieve better postoperative anterior knee laxity.