KNEE JOINT ROTATION AND LOADING DURING TURNING AFTER ANTERIOR CRUCIATE LIGAMENT RECONSTRUCTION

摘要

Abnormal knee movement during dynamic activities after ACL rapture has been reported[l-3]. A reconstructive surgery is recommended by orthopedic surgeons to restore joint stability. After ACL reconstructive surgery and rehabilitation that follows the normal knee movement has not been fully restored, especially for the nonsagittal plane rotations, during walking and high demanding activities (stairs, pivoting, cutting, jump and landing, etc.) [2, 4-10]. In the single-bundle techniques, grafts are often too close to the central axis of the tibia and femur that makes the grafts inadequate for resisting rotational loads [11]. Recent studies found that the axial tibial rotation was not restored to normal physiological level during pivoting [7-14]. Dominance related differences were observed from postsurgical knee performance [15-16]. Recently double-bundle techniques is developed and used. Unfortunately double-bundle technique is more difficult with more holes drilled on femur and tibia.