Abductor hallucis

  • The abductor hallucis (also abductor hallucis muscle, latin: musculus abductor hallucis) is a muscle of the sole of the foot located in the superficial layer of the medial muscle group or the muscles of the big toe. The abductor hallucis aids in abducting the big toe.

    Origin

    The abductor longus originates from the calcaneal tuberosity of the calcaneus bone.

    Insertion

    The abductor hallucis inserts at the proximal phalanx of the first digit of the foot (hallux or big toe).

    Action

    The main function of the abductor hallucis is abduction of the big toe, but it also participates in flexion of the big toe.

    Innervation

    The abductor hallucis is innervated by the medial plantar nerve, one of the terminal branches of the tibial nerve.