Obturator Externus : Origin, Insertion, Action & Nerve Supply

Obturator Externus: Obturator Externus is one of the smaller muscles of the medial thigh, and it’s located most superiorly.

Attachments of the Obturator Externus

Origin-It originates from the membrane of the obturator foramen and adjacent bone. It passes under the neck of femur
Insertion- attaching to the posterior aspect of the greater trochanter.

Function of the Obturator Externus
Laterally rotates the thigh.

Nerve Supply of the Obturator Externus
Obturator nerve (L2-L4).