abductor hallucis muscle

abductor hallucis

The Abductor hallucis lies along the medial border of the pes 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.

Tipo Muscle
Estructura principal muscle of pes
Nombre latino abductor hallucis
FMA ID 37448

Preguntas frecuentes

What is the abductor hallucis muscle?
The abductor hallucis (abductor hallucis) is a muscle located along the medial border of the foot. It functions to abduct the big toe (hallux) and helps support the medial longitudinal arch of the foot.
Where is the abductor hallucis muscle located?
The abductor hallucis lies along the medial (inner) border of the foot, covering the origins of the plantar vessels and nerves. It arises from the medial calcaneal tuberosity, plantar aponeurosis, and related ligaments, and inserts into the medial side of the base of the proximal phalanx of the great toe.
What is the function of the abductor hallucis muscle?
The primary function of the abductor hallucis is to abduct (move outward) the big toe, though it also assists with plantarflexion of the great toe. Importantly, it plays a significant role in maintaining the medial longitudinal arch of the foot and stabilizing the first metatarsophalangeal joint.
What conditions can affect the abductor hallucis muscle?
Weakness of the abductor hallucis is associated with flatfoot (pes planus) and hallux valgus (bunion deformity), where the big toe drifts medially. The muscle's tenderness and dysfunction can also be a component of plantar fasciitis. Entrapment of its nerve supply contributes to some heel pain syndromes.
How is the abductor hallucis different from the flexor hallucis brevis?
The abductor hallucis primarily moves the great toe away from the midline and supports the arch, while the flexor hallucis brevis flexes (curls) the toe downward. The flexor hallucis brevis contains the sesamoid bones and contributes more directly to the push-off phase of walking.

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Data sources: Terminologia Anatomica, Foundational Model of Anatomy, Wikidata.