Extensor pollicis longus

Extensor pollicis longus (EPL) is a muscle of the deep compartment in the posterior compartment of the forearm. It passes through the 3rd extensor compartment of the wrist, then continues laterally towards the thumb around Lister's tubercle. The tendon of EPL defines the ulnar border of the anatomical snuff box. It is one of the extrinsic muscles of the hand.


Related pathology

Anatomy: Upper limb

Anatomy: Upper limb

Article information

rID: 40129
Section: Anatomy
Synonyms or Alternate Spellings:
  • Extensor pollicis longus (EPL)

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Cases and figures

  • Figure 1: extensor compartments of the wrist
    Drag here to reorder.
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