Anatomy
Origin:
Dorsal surface of the ischial spine.
Insertion:
Blends with the more superior fibres of the tendon of the obturator internus and attaches with the tendon to the medial border of the greater trochanter of the femur.
Key Relations:
Lies superior to the obturator internus muscle.
Functions
Working with gemellus inferior and obturator internus, laterally rotates the extended thigh and abducts the flexed thigh at the hip joint.
Supply
Nerve Supply:
Nerve to obturator internus (L5, S1).
Blood Supply:
-Branches of the internal iliac arteries including the superior and inferior gluteal arteries
-Internal pudenal artery.
Interested in taking our award-winning Pocket Anatomy app for a test drive?
