Also found in: Dictionary, Thesaurus, Encyclopedia, Wikipedia.
Etymology: L, obturare, to close, musculus
a pair of thigh muscles, the external and internal obturators. The external obturator flexes and rotates the thigh laterally, and the internal obturator abducts and rotates the thigh laterally.
obturator musclesThe obturator externus and obturator internus muscles that cover the outer surface of each side of the front of the pelvis. The tendons of these muscles pass behind the hip joint and are inserted into the top of the femur. They rotate the thigh outwards.
a disk or plate that closes an opening, e.g. to close a cleft palate temporarily or permanently.
the muscles that rotate the thigh laterally. See also Table 13.
obturator nerve degeneration
causes permanent obturator nerve paralysis (below).
commonly follows pressure on the obturator nerve during parturition; causes inability to adduct the thighs and the cow does the splits. When recumbent the legs are splayed with one on either side of the body.