The adductor magnus (also adductor magnus muscle, latin: musculus adductor magnus) is a large triangular muscle situated in the medial region of the thigh. The adductor magnus is the largest of the adductor muscle group.
The adductor magnus arises from the inferior pubic ramus and, additionally, from the ischial tuberosity.
The adductor magnus inserts onto the medial lip of the linea aspera and the medial epicondyle of the femur.
The anterior fibers of the adductor magnus adduct and rotate the femur externally, but the posterior fibers extend the femur and rotate the thigh internally.
The adductor magnus is innervated by the posterior branch of the obturator nerve arising from the lumbar plexus and branches of the sciatic nerve from the sacral plexus.