Origin

Arises from the middle portion of the fibula on the anterior surface and the interosseous membrane

Insertion

Inserts on the dorsal side of the base of the distal phalanx of the big toe

Action(s)

Extends the big toe and assists in dorsiflexion of the foot at the ankle. Also is a weak invertor

Nerve Supply

Peroneal nerve

Arterial Supply

Anterior tibial artery

Physical Exam

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Clinical Importance

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Disease States

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Discussion

Occasionally united at its origin with the Extensor digitorum longus.

Extensor ossis metatarsi hallucis, a small muscle, sometimes found as a slip from the Extensor hallucis longus, or from the Tibialis anterior, or from the Extensor digitorum longus, or as a distinct muscle; it traverses the same compartment of the transverse ligament with the Extensor hallucis longus.

Figures

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From Wikipedia:
Extensor hallucis longus

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