Name
Pronunciation
(OB-tu-ra-tur ex-TER-nus)
Origin/Proximal Attachment
Medial surface of obturator foramen; external surface of obturator membrane
Insertion/Distal Attachment
Trochanteric fossa of femur
Action/Relevance
Externally rotate the thighAssists to flex hip
Innervation
Nerve to obturator externus (L3, 4)
Notes
Flat triangular muscle covering the external surface of the anterior aspect of the pelvis
Crosses the back of the femoral neck