Extensor hallucis longus

  • The extensor hallucis longus (also extensor hallucis longus muscle, latin: musculus extensor hallucis longus) is a thin muscle located in the anterior region of the lower leg between the tibialis anterior and extensor digitorum longus.

    Origin

    The extensor hallucis longus originates from the anterior surface of the fibula and from the interosseous membrane of the leg.

    Insertion

    The extensor hallucis longus inserts at the distal phalanx of the first digit (hallux or big toe).

    Action

    The functions of the extensor hallucis longus are extension, adduction and supination of the foot and extension of the first digit - the big toe.

    Innervation

    The extensor hallucis longus is innervated by the deep peroneal nerve, a branch of the common peroneal nerve.