Posted: 2/22/2022

Obturator Externus - Everything You Need To Know - Dr. Nabil Ebraheim

Video Description

Dr. Ebraheim’s educational animated video describes the anatomy of the obturator externus muscle.
The obturator externus is one of the six short external rotators of the hip.
Origin: it arises from the obturator foramen and the obturator membrane.
Insertion: it inserts into the trochanteric fossa of the femur.
Action: it laterally rotates and adducts the thigh.
Innervation: the obturator externus muscle is innervated by the posterior division of the obturator nerve.
Six short external rotators of the hip:
1-Piriformis muscle.
2-Superior gemellus muscle.
3-Obturator internus muscle.
4-Inferior gemellus muscle.
5-Obturator externus muscle.
6-Quadratus femoris muscle.
The short external rotators are used to protect the sciatic nerve. The sciatic nerve will be behind these muscles.

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