Name

# Abductor Hallucis

Pronunciation

(ab-DUK-tor Ha-loo-sus)

Origin/Proximal Attachment

Medial process of calcaneal tuberosity

Flexor retinaculum

Plantar aponeurosis

Medial intermuscular septum

Insertion/Distal Attachment

Medial aspect of base of proximal phalanx of hallux (big toe)

Action/Relevance

Flexes the big toe (primary action)

May assist to abduct the big toe

Innervation

Medial plantar nerve (L5, S1)

Notes

The Abductor hallucis lies along the medial border of the foot and covers the origins of the plantar vessels and nerves. It arises from the medial process of the tuberosity of the calcaneus, from the laciniate ligament, from the plantar aponeurosis, and from the intermuscular septum between it and the Flexor digitorum brevis. The fibers end in a tendon, which is inserted, together with the medial tendon of the Flexor hallucis brevis, into the tibial side of the base of the first phalanx of the great toe.