Lumbricals (of foot)

  • The lumbricals of the foot (also lumbrical muscles of foot, latin: musculi lumbricales pedis) are four small intrinsic muscles of the sole of the foot.

    Origin

    The lumbrical muscles arise from the tendon of the flexor digitorum longus.

    Insertion

    The lumbricals insert at the proximal phalanges of the second to fifth digits of the foot.

    Action

    The lumbricals play role in the flexion of the proximal phalanges and extension of the medial and distal phalanges of the second to fifth toe.

    Innervation

    The lumbricals of the foot are innervated by the medial and lateral plantar nerves, both terminal branches of the tibial nerve.