Isometry of the Anterior Cruciate Ligament: An Intraoperative Perspective

ABSTRACT: The emphasis our society places on physical fitness has produced an ever  increasing number of injuries to the anterior cruciate ligament (ACL). To successfully replace  the anterior cruciate deficient knee, physicans need to determine the “ideal” location for the  femoral tunnel. In the search to find this “isometric point,” if there is one, we draw attention to  the origin of the distal fascicles of the anterior cruciate from the lateral femoral condyle.  Visualizing this surgical landmark can facilitate and expedite accurate placement of the  isometric device and thus influence the results of the surgical procedure. Also, magnetic  resonance imaging may help the surgeon in locating the origin of the ACL.