supinator muscle


su·pi·na·tor mus·cle

(sū'pi-nā'tŏr mŭs'ĕl) Origin, lateral epicondyle of humerus, radial collateral and anular ligaments, and supinator ridge of ulna; insertion, anterior and lateral surface of radius; action, supinates the forearm; nerve supply, radial (posterior interosseous).
Synonym(s): musculus supinator [TA] .