Isometric point of lateral femoral condyle analysis with in vitro kinematic study in order to position the extra-articular part of an ACL reconstruction

Abstract

The anterior cruciate ligament (ACL) injury leads to an anterior laxity associated with a variable rotational laxity. Without any treatment, this lesion can have functional consequences (instability, disturbance of sport activities or even everyday life activities) and anatomic ones (meniscal or cartilaginous lesions) (Dejour et al. 2004). However, ACL reconstruction can fail in 5–30% of the cases (Dejour et al. 2004, 2014; Bignozzi et al. 2009), because of a recurrence of laxity or a residual rotational laxity. The extra-articular tenodesis associated with an intra-articular plasty (Khiami et al. 2013) is supposed to control the rotational laxity, but the precise positioning on the lateral femoral condyle is not well defined.The objective of this study is to determine the isometric point on the lateral side of the lateral femoral condyle relatively to the Gerdy’s Tubercle with an in vitro kinematic 3D study.