A 24 years old college student while playing hockey injured his right knee. This patient presents after 3 months with instability of knee joint in it full extension without instability at 90 degree of flexion. The structure most commonly damaged is:
Posterolatilal pa of anterior cruciate ligament
Anteromedial pa of anterior cruciate ligament
Posterior cruciate ligament
Anterior hom of medial meniscus
Ans. a. Posterolateral pa of anterior cruciate ligament