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Abstract

BackgroundACL is one of the most important and commonly injured ligaments in the knee. It originates from the posteromedial surface of the lateral condyle of the femur and inserts onto the anterior part of the proximal tibial intercondylar area. ACL injury can alter the biomechanics of the knee and cause subsequent secondary complications like osteoarthritis and chondromalacia.Most ACL injuries are of the non-contact type. Many studies have investigated constitutional and physical properties of the ACL. The contribution of gender, diameter, volume and crosssectional area of the ACL to ACL strength has been well established. Correlation between body weight, height and age to ACL strength has also been well studied.However, there have been very few studies looking into how Notch Width Index (NWI) and notch volume would contribute to ACL injury. This study utilised MRI to measure notch width, notch height, notch width index, medial condyle-to-lateral condyle ratio and angle of ACL inclination to the vertical axis and to evaluate their impact on ACL injuries in the respective knees.