Origin
Pelvic surfaces ilium/ischium & obturator membrane
Insertion
Medial surface of greater trochanter (trochanteric fossa)
Actions
- Laterally rotates the hip joint
- Stabilises the hip joint
- Assists with abduction of the hip when flexed
Innervation
Nerve to obturator internus (L5 & S1)
Blood Supply
- Obturator Artery
- Inferior Gluteal Artery
- Pudendal Artery
Would you like to learn more about the obturator internus muscle? Then check out the obturator internus muscle article and video by clicking the link below: Obturator Internus Muscle Anatomy
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