The medial thigh houses the groin or adductor muscles. These muscles are medial rotators and flexors of the hip. They also probably act as hip stabilizers during locomotion. Almost all of them receive motor innervation from the obturator nerve (remember - we saw the obturator nerve in the pelvis).

Most of these muscles arise from the pubic bone, but one part of the adductor magnus arises from the ischial tuberosity and really not only acts like a hamstring muscle, but also receives its motor innervation from the tibial portion of the sciatic.

The hamstring part of the adductor magnus attaches to the adductor tubercle of the medial epicondyle of the femur. Just prior to this attachment, the adductor magnus provides an opening in itself, the adductor hiatus, for the passage of the femoral artery and vein from anterior thigh to posterior thigh to become the popliteal artery and vein.