What action does the adductor magnus hamstring/medial part perform?

• A. Abducts thigh
• B. Adducts and medially rotates thigh
• C. Flexes thigh
• D. Extends thigh

Answer: (B)

The adductor magnus has two parts with different actions: the posterior (hamstring/ischiocondylar) part and the anterior (adductor) part. The posterior portion originates from the ischial tuberosity and inserts near the adductor tubercle of the femur, and its contraction pulls the thigh back at the hip joint, producing extension. That is its main role, distinguishing it from the anterior part, which primarily adducts (and can medially rotate or flex) the thigh. So the hamstring/medial part’s action is extending the thigh at the hip. The other options describe actions more typical of other hip muscles or the anterior part of the adductor magnus.