Extensor hallucis brevis
Muscles of the front of the leg. (Ext. hallucis brevis colored in red.)
Animation
Details
OriginCalcaneus
InsertionProximal phalanx of digit 1 (hallux, or the great toe)
ArteryDorsalis pedis artery
NerveDeep fibular nerve
ActionsExtend hallux
AntagonistFlexor hallucis brevis muscle
Identifiers
Latinmusculus extensor hallucis brevis
TA98A04.7.02.054
TA22670
FMA51141
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).

Nerve supply

Nerve supplied by 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

Additional images