Opponens digiti minimi (of hand)

  • The opponens digiti minimi (also opponens digiti minimi muscle or opponens digiti quinti, latin: musculus opponens digiti minimi) is one of the muscles of the little finger (hypothenar muscles) lying on the ulnar side of the palm.

    The opponens digiti minimi is a triangular muscle that is situated medially to the flexor digiti minimi and below the abductor digiti minimi of the hand.

    Origin

    The opponens digiti minimi originates from the flexor retinaculum and the hamulus of the hamate bone.

    Insertion

    The opponens digiti minimi passes obliquely to the ulnar side and inserts onto the fifth metacarpal bone.

    Action

    The main function of the opponens digiti minimi is to  oppose the little finger.

    Innervation

    The opponens digiti minimi is innervated by the ulnar nerve.