Anterolateral Meniscofemoral Ligament Associated with Ring-shaped Lateral Meniscus and Congenital Absence of Anterior Cruciate Ligament, Managed with Ligament Reconstruction

Abstract

A 24 year old otherwise healthy male was presented with a chief complaint of giving way in the left knee. MRI reported<br />complete anterior cruciate ligament (ACL) tearing. Arthroscopy showed ACL agenesis, ring-shaped lateral meniscus,<br />and an anomalous thick band extending from the anterior horn of the lateral meniscus to the intercondylar notch of the<br />lateral femoral condyle, which is known as the anterolateral meniscofemoral ligament (MFL). The MFL was attached<br />to the anatomic site of anteromedial bundle of ACL. ACL reconstruction surgery was performed using central 1/3 bone<br />tendon bone graft.<br />Practitioners should be aware that ACL reconstruction in lateral meniscofemoral ligament with associated ACL agenesis<br />is a treatment option in which the preservation of MFL, as the stabilizer of anterior horn of lateral meniscus, should be<br />considered during ACL reconstruction as a good treatment choice.<br />Level of evidence: V