Name
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.