Extensor hallucis brevis muscle

Extensor hallucis brevis

The mucous sheaths of the tendons around the ankle. Medial aspect. (Ext. hall. long. labeled at top center.)

Muscles of the front of the leg. (Ext. halluc. long. labeled vertically at center.)
Details
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
Identifiers
Latin musculus extensor hallucis brevis
Dorlands
/Elsevier		 m_22/12548920
TA A04.7.02.054
FMA 51141

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

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

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

Function

The extensor hallucis brevis helps to extend the big toe.

See also

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

Additional Images

External links

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