Adductor Magnus

The proximal attachments of the adductor muscles extend from the anterior aspect of the pubic bone, along the ischiopubic ramus, reahcing the ischial tuberosity. From their origins, these muscles run posteriorly, laterally, and inferiorly to the femur. They form an overlapping sheet of muscle that, becoming aponeurotic, finds a continuous attachment to the spiral line, the medial lip of the linea aspera. The medial supracondyle line, and the adductor tubercle. Some fibers of Adductor Magnus arising from the ishiopubic ramus fan out and attach to the linea aspera. Their aponeurotic tendon shows a deficiency in its lower part called the adductor hiatus, which transmits the femoral vessels. The action of all three muscles is to adduct the thigh. Although normal activity does not often require this as a prime movement, these muscles also play a synergistic part in locomotion and posture. The ischiocondylar portion of adductor magnus is also a weak extensor of the thigh. The obturator nerve innervates all three muscles. The tibial division of the sciatic nerve innervates the ischiocondylar portions of adductor magnus.