Dorsal interossei (of foot)

  • The dorsal interossei of the foot (also dorsal interossei muscles of foot, latin: musculi interossei dorsales pedis) are four muscles located in the sole of the foot between the metatarsal bones.

    Origin

    The dorsal interossei muscles originate with two heads from opposing surfaces of adjacent metatarsal bones.

    Insertion

    The dorsal interossei insert at the proximal phalanges of the second, third and fourth digits of the foot.

    Action

    The main function of the dorsal interossei muscles is to abduct the digits of the foot.

    Innervation

    The dorsal interossei of the foot are innervated by the lateral plantar nerve, a terminal branch of the tibial nerve.