Origin

Lateral epicondyle of humerus, supinator crest of ulna, radial collateral ligament, annular ligament

Insertion

Lateral proximal radial shaft

Action(s)

The action of the supinator is suggested by its name; it assists the biceps in bringing the hand into the supine position.

Nerve Supply

Deep branch of radial nerve

Arterial Supply

Radial recurrent artery

Physical Exam

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Clinical Importance

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Disease States

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Discussion

General use of term:

The term “supinator” can also refer more generally to a muscle that causes supination of a part of the body. In older texts, the term “supinator longus” was used to refer to the brachioradialis, and “supinator brevis” was used to the muscle now known as the supinator.

Figures

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Credits:

From Wikipedia:
Supinator

Attachments:


Supinator.png (image/png)