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obturator internus

^ http://purl.obolibrary.org/obo/UBERON_0011048

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

Term info

database cross reference
UBPROP 0000001

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]

UBPROP 0000012

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]

depicted by

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

has related synonym

internus obturator, obturatorius internus, musculus obturatorius internus, obturator internus muscle

id

UBERON:0011048

prefLabel

Obturator internus