Supinator muscle

Supinator muscle
Posterior view of the supinator. (Right arm.)
Details
OriginLateral epicondyle of humerus, supinator crest of ulna, radial collateral ligament, annular ligament
InsertionLateral proximal radial shaft
ArteryRadial recurrent artery
NerveDeep branch of the radial nerve
ActionsSupinates forearm
AntagonistPronator teres, pronator quadratus
Identifiers
Latinmusculus supinator
TA98A04.6.02.048
TA22512
FMA38512
Anatomical terms of muscle
Sketch depicting the constitution of the supinator. 1, radial nerve — 2, humerus — 3, ulna — 4, ulnar portion (pars profunda) — 5, oblique cord (transected) — 6, interosseous membrane — 7, radius — 8, humeral portion (pars superficialis). (After Testut.)

In human anatomy, the supinator (also historically known as the supinator brevis) is a broad muscle in the posterior compartment of the forearm, curved around the upper third of the radius. Its function is to supinate the forearm.

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