Summary
Origins
- External surface of the obturator membrane and adjacent margins of the pubis and ischium
Insertions
- Trochanteric fossa of the 🦴 femur
Actions
- Laterally rotates the hip
- Stabilizes the femoral head within the acetabulum
The obturator externus cloaks the outer pelvis, its flat fibers emerging from an obturator membrane before threading under the 🦴 femur to the posterior trochanteric fossa. It assists the deep rotators in turning the thigh outward and centering the femoral head.