The obturator internus muscle originates on the medial surface of the obturator membrane, the ischium near the membrane, and the rim of the pubis. It exits the pelvic cavity through the lesser sciatic foramen. The obturator internus is situated partly within the lesser pelvis, and partly at the back of the hip-joint. It functions to help laterally rotate extended thigh and abduct flexed thigh, as well as to steady the femoral head in the acetabulum. [ http://en.wikipedia.org/wiki/Obturator_internus_muscle ]

Synonyms: musculus obturator internus internal obturator

This is just here as a test because I lose it

Term information

depicted by

http://upload.wikimedia.org/wikipedia/commons/5/55/Posterior_Hip_Muscles_1.PNG

external definition

Originates on the entire lateral surface of the pelvic rim. Dorsal fibers insert distally to the dorso-medial surface of the caput femoris and ventral fibers extend around the acetabulum to insert on the tendon of the caput femoris.[AAO]

external ontology notes

Definition generalized to accommodate AAO class - 'Originates on the entire lateral surface of the pelvic rim. Dorsal fibers insert distally to the dorso-medial surface of the caput femoris and ventral fibers extend around the acetabulum to insert on the tendon of the caput femoris.' [AAO:0010052]

has related synonym

internus obturator

obturatorius internus

musculus obturatorius internus

obturator internus muscle

id

UBERON:0011048