Adductor magnus muscle
The adductor magnus muscle is a muscle of the hip that connects the pelvis to the femur. When contracted, it bring the hip forward and inward (extends and adducts it) and rotates it medially (knee cap turns inward).
The adductor magnus muscle has two sections, the adductor portion and the hamstring portion. The adductor portion is responsible for the adduction and medial rotation of the hip. The hamstring portion is responsible for the extension of the hip. The two sections have separate functions and innervations.
The adductor magnus originates from the lower pelvis. The adductor portion originates from the ischiopubic ramus. The hamstring portion originates from the lower outer quadrant of the posterior surface of the ischial tuberosity.