Abductor hallucis muscle

Abductor hallucis muscle
First layer of muscles of the sole of the foot (abductor hallucis visible at lower right)
Details
Origin	Tuberosity of the calcaneus
Insertion	Medial aspect of base of 1st phalanx of hallux
Artery	Medial plantar artery
Nerve	Medial plantar nerve
Actions	Abducts hallux
Antagonist	Adductor hallucis muscle
Identifiers
Latin	Musculus abductor hallucis
Dorlands /Elsevier	m_22/12548299
TA	A04.7.02.056
FMA	37448
Anatomical terms of muscle []

The abductor hallucis muscle is an intrinsic muscle of the foot. It participates in the abduction and flexion of the great toe.

The abductor hallucis muscle is located in the medial border of the foot and contributes to form the prominence that is observed on the region. It is inserted behind on the tuberosity of the calcaneus, the flexor retinaculum, and the plantar aponeurosis. Its muscle body, relatively thick behind, flattens as it goes forward. It ends in a common tendon with the medial head of the flexor hallucis brevis that inserts on the medial surface of the base of the first proximal phalanx and its related sesamoid bone. Its medial surface is superficial and covered with the muscle's fascia and the skin.

Abductor hallucis is innervated by the medial plantar nerve. The nerves that supply it enter the muscle from its upper border.

Superficial dissection of the sole of the foot, showing the medial eminence formed by abductor hallucis

Abductor hallucis muscle

Coronal section through right talocrural and talocalcaneal joints

This article incorporates text in the public domain from the 20th edition of Gray's Anatomy (1918)