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image: Extensor Carpi Ulnaris
Extensor Carpi Ulnaris

Extensor Carpi Ulnaris

 Articulations :

 Action :

  • Extend and abduct hand at wrist joint.

Origin :

  • Lateral epicondyle of humerus and posterior border of ulna.

Insertion :

  • Base of 5th metacarpal.

Innervation :

  • Posterior interosseous nerve (C7 and C8).
  • The continuation of the deep branch of the radial nerve.

Arterial Supply :

  • Ulnar artery.

Depth :

  • Superficial
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