- See: Plantar Muscles of the Foot
Origin: 2 heads, the medial surface and the lateral border of the inferior surfaces of the calcaneus;
Insertion: fuses with the tendon of the flexor digitorum longus;
Action: flexes the 2nd to 5th toes;
Nerve Supply: Lateral plantar, S1, S2; (See Innerv. Musc. Lower Limb )
Synergists: flexor digitorum longus, flexor digitorum brevis.