The abductor digiti minimi pedis (abductor digiti quinti) muscle lies under the outside border of the foot. It originates from the calcaneum and runs along the outer edge of the foot, inserting into the outer side of the base of the first phalanx of the little toe. It is innervated by the lateral plantar nerve and supplied by the plantar artery. This muscle is for the most part concealed by the dense, fibrous fat pad of the sole of the foot. It works to flex and draw the little toe away from the foot. Research Abductor Digiti Minimi Pedis