The proximal attachments of the adductors extend from the anterior aspect of the pubic bone, along the ischiopubic ramus, reaching 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 supracondylar line, and the adductor tubercle. Some fibers (of Adductor Magnus) arising from the ischiopubic 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 Adductor Longus, Adductor Brevis, and adductor magnus 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 portion of adductor magnus.