Extensor hallucis brevis muscle

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Extensor hallucis brevis
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The mucous sheaths of the tendons around the ankle. Medial aspect. (Ext. hall. long. labeled at top center.)
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Muscles of the front of the leg. (Ext. halluc. long. labeled vertically at center.)
Latin musculus extensor hallucis brevis
Gray's p.490
Origin calcaneus
Insertion proximal phalanx of digit 1 (hallux, or the great toe)
Artery dorsalis pedis artery
Nerve deep fibular nerve
Actions Extend hallux
Antagonist Flexor hallucis brevis muscle
Anatomical terms of muscle

The extensor hallucis brevis is a muscle on the top of the foot that helps to extend the big toe.

Structure[edit]

The extensor hallucis brevis is essentially the medial part of the extensor digitorum brevis muscle. Some anatomists have debated whether these two muscles are distinct entities.

The extensor hallucis brevis arises from the calcaneus and inserts on the proximal phalanx of the digit 1 (the big toe).

Innervation[edit]

Nerve supply: lateral terminal branch of Deep Peroneal Nerve (deep fibular nerve) (proximal sciatic branches S1,S2). Same innervation of Extensor Digitorum Brevis

Function[edit]

The extensor hallucis brevis helps to extend the big toe.

See also[edit]

This article uses anatomical terminology; for an overview, see anatomical terminology.

Additional Images[edit]

External links[edit]