Extensor Hallucis Longus

Written by Roxanne Salkeld

Last updated January 7, 2023 • 5 Revisions •

The extensor hallucis longus is a muscle in the anterior compartment of the leg. It is located deep to tibialis anterior and extensor digitorum longus – its tendon emerges from between the two muscles to insert onto the big toe.

  • Attachments: Originates from the medial surface of the fibular shaft. The tendon crosses anterior to the ankle joint and attaches to the base of the distal phalanx of the great toe.
  • Action: Extension of the great toe and dorsiflexion of the foot
  • Innervation: Deep fibular nerve
  • Blood supply: Anterior tibial artery

Fig 1
The muscles of the anterior leg.

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