Abductor Digiti Minimi Brevis
(see also: Plantar Muscles of the Foot, Innerv. Musc. Lower Limb) Origin: the lateral process of the tuberosity of calcaneus. Insertion: lateral side of the base of the proximal phalanx of the 5th toe. Action: Spreads the 5th toe away from the 4th toe. Nerve Supply: lateral plantar nerve, S1, S2