Simultaneous anterior cruciate ligament repair and medial unicompartmental knee replacement

Abstract

We present the case of a 55-year-old female who sustained avulsion of anterior cruciate ligament (ACL) from its tibial attachment while undergoing unicompartmental knee replacement (UKR). The fibers of ACL were intact. Realizing the paramount importance of ACL in a knee undergoing UKR, we promptly performed a primary repair of the ACL and continued with the surgery in the same sitting. At the latest follow-up, the patient is doing well both clinically and functionally and has no antero-posterior or varus-valgus laxity. We discuss the cause for ACL avulsion during UKR and precautions to avoid it.