Name
Pronunciation
(OB-tu-ra-tur in-TER-nus)
Origin/Proximal Attachment
Internal margins of obturator foramen; obturator membrane
Insertion/Distal Attachment
Medial aspect of greater trochanter (through lesser sciatic foramen)
Action/Relevance
Externally rotate the thighAbducts thigh when flexed
Innervation
Nerve to obturator internus (L5, S1, 2)
Notes
Both gemelli fuse with the tendon of ob internus before its insertion.