The obturator internus is a muscle of the gluteal region in the lower limb. It forms part of the lateral wall of the pelvic cavity.
- Attachments: Originates from the pubis and ischium at the obturator foramen. It travels through the lesser sciatic foramen and attaches onto the greater trochanter of the femur.
- Actions: Lateral rotation and abduction of the lower limb.
- Innervation: Nerve to obturator internus.
- Blood Supply: Obturator artery
