Obturator Internus

The Obturator Internus arises by broad attachement from the inner aspect of the superior and inferior rami of the pubis, the ischial ramus, and the posterior aspect of the pelvic brim. It exits the pelvis via the lesser sciatic foramen to be joined by the superior and inferior gemelli prior to attaching to the greater trochanter. It is a lateral rotator of the thigh.