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 Medial|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.

Origin
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.

Insertion
The adductor magnus inserts on the femur. The adductor portion attaches at the lower gluteal line and linea aspera of the femur. The hamstring portion attaches at the adductor tubercle of the femur.

Innervation
The adductor magnus is innervated by the posterior division of the obturator nerve (L2-L4) for the adductor portion and the tibial portion of sciatic nerve (L4-S3) for the hamstring portion.