Extensor digitorum

Extensor digitorum (ED), also known as extensor digitorum communis (EDC), is a muscle of the superficial layer of the posterior compartment of the forearm and with other extensor muscles arises from a common tendon attached to the lateral epicondyle of the humerus. ED represents a medial group of superficial extensor muscles. ED passes under the extensor retinaculum which holds it tight and passes through the 4th extensor compartment of the wrist. It is one of the extrinsic muscles of the hand.


Anatomy: Upper limb
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Article information

rID: 41591
Section: Anatomy
Tag: refs
Synonyms or Alternate Spellings:
  • extensor digitorum communis
  • extensor digitorum muscle
  • extensor digitorum communis muscle

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Cases and figures

  • Figure 1: extensor compartments of the wrist
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