Extensor Hallucis Brevis
Introduction[edit | edit source]
The EHB is a muscle on the top of the foot that helps to extend the big toe .It is essentially the medial part of the extensor digitorum brevis muscle.
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Anatomy[edit | edit source]
Origin[edit | edit source]
From distal part of superior and lateral surface of calcaneus ,lateral talocalcaneal ligament and apex of inferior extensor retinaculum.
Insersion
[edit | edit source]
To dorsal surface of base of proximal phalanx of big toe .
Nerve supply[edit | edit source]
Deep peroneal L4 ,L5 , S1 .
Action[edit | edit source]
Extend the metatarsophalangeal joint of the big toe .
Blood supply[edit | edit source]
The perforating branch of the peroneal artery, anterior lateral malleolar artery, lateral tarsal arteries, dorsalis pedis artery, arcuate artery, first dorsal metatarsal artery, and dorsal digital arteries
