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