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
Latin	musculus extensor hallucis brevis
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
Dorlands /Elsevier	m_22/12548920
TA
TH	{{#property:P1694}}
TE	{{#property:P1693}}
FMA	{{#property:P1402}}
Anatomical terms of muscle [[[d:|edit on Wikidata]]]

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.

• Extensor digitorum brevis
• Extensor hallucis longus

Additional Images

• 

  Dorsum of Foot. Deep dissection.

• 

  Dorsum of Foot. Deep dissection.

External links

• -577109939 at GPnotebook
• Anatomy figure: 16:03-05 at Human Anatomy Online, SUNY Downstate Medical Center - "Dorsum of the foot showing the tendons that cross the ankle joint."