Updated: 12/28/2021

Extensor Digitorum Communis

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  • Summary
    • Extensor Digitorum Communis
      Origin
      Lateral epicondyle of humerus
      Insertion
      Extensor expansions of medial four digits
      Action
      Extends medial four digits at metacarpophalangeal joints; Extends hand at wrist joint
      Innervation
      Posterior interosseous nerve (C7, C8)
      Arterial Supply
      Interosseous recurrent and posterior interosseous arteries

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