GROSS ANATOMY

Detailed explanation-1: -All the hip adductors are innervated by the obturator nerve, which arises from the lumbar plexus. In closed chain activation, the hip adductors help stabilize the pelvis and lower extremity during the stance phase of gait, and assist in postural control.

Detailed explanation-2: -The hip adductor group, innervated predominantly by the obturator nerve, occupies a large volume of the lower limb. However, case reports of patients with obturator nerve palsy or denervation have described no more than minimal gait disturbance.

Detailed explanation-3: -The anterior branch of the obturator nerve innervates the adductor longus, adductor brevis, and gracilis muscles, as well as giving innervation to the hip joint.

Detailed explanation-4: -The adductor portion of the adductor magnus is innervated by the posterior division of the obturator nerve (L2, 3, 4). The hamstring portion of the adductor magnus is so named due to the similarity in structure, proximal attachment, and innervation to the hamstring muscles.

Detailed explanation-5: -The obturator nerve divides into anterior and posterior divisions of the obturator nerve. These divisions both provide skeletal musculature innervation, and the anterior division terminates as the cutaneous branch of the obturator nerve.