Extensor pollicis longus muscle

Last revised by Dr Joachim Feger on 26 Aug 2021

Extensor pollicis longus (EPL) muscle 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 snuffbox. It is one of the extrinsic muscles of the hand.


Related pathology

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Cases and figures

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