Flexor digiti minimi brevis muscle (hand) Tags: Anatomical Structure, Muscle.For the muscle of the foot see Flexor digiti quinti brevis muscle (foot)The flexor digiti minimi brevis is a muscle in the hand that flexes the little finger. It lies in the same plane as the abductor digiti minimi on its radial side. thumbnail Dorlands prefix m_22 Dorlands suffix 12549047 Gray page 464 Gray subject 126 nerve Deep branch of ulnar nerve Learn more... Loading...