Updated: 12/28/2021

Supinator

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  • Summary
    • Supinator 
      Origin
      Lateral epicondyle of humerus, radial collateral and annular ligaments, supinator fossa and crest of ulna
      Insertion
      Lateral, posterior and anterior surfaces of proximal 1/3 of radius
      Action
      Supinates forearm (i.e., rotates radius to turn palm anteriorly)
      Innervation
      Deep branch of radial nerve (C5, C6)
      Arterial supply
      Recurrent interosseous artery

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