Summary
Origins
- Spine of the ischium
Insertions
- Medial surface of the greater trochanter via the tendon of the obturator internus
Actions
- Laterally rotates the hip
- Stabilizes the femoral head in the acetabulum
The superior gemellus sits above the obturator internus, helping redirect its tendon toward the greater trochanter. Together with the inferior gemellus it braces the hip capsule and assists lateral rotation of the femur.