Extensor Digitorum Communis - Muscle Physiology & Functional Anatomy


Extensor Digitorum Communis MuscleAnatomy



  • Common extensor origin on anterior aspect of lateral epicondyle of humerus


  • External expansion to middle & distal phalanges by four tendons (tendons 3 & 4 usually fuse & little finger just receives a slip)

Major Artery:


Neural Innervation:

  • Posterior interosseous nerve (C7-C8)


Trigger Points: 

Trgger Points for Extensor Digitorum




Concentric Functions:

  • Extends all joints of fingers

Eccentric Functions:

Isometric Function:

Related Muscles





More Images of the Extensor Digitorum Communis Muscle


Extensor Digitorum Muscle

More Information about the Extensor Digitorum Communis Muscle

The extensor dgitorum communis muscle is is also simply known as the extensor digitorum.


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