1 M. abductor hallucis. Abductor muscle of great toe. o: Medial process of tuber calcanei. i: Medial sesamoid and proximal phalanx of big toe. A: Medial abduction, supports the longitudinal arch. I. See 2. A B
2 M. flexor hallucis brevis. Short flexor muscle of the great toe. Origin: Cuneiform I, long plantar ligament, tendon of the posterior tibial m. and plantar aponeurosis. Forms a groove for transmission of the flexor hallucis longus m., stabilizes the longitudinal arch. A B
2a Medial head. Caput mediale. o: Tendon of the abductor m. of the great toe, sesamoid bone and proximal phalanx.
2b Lateral head. Caput laterale. o: Tendon of the adductor m. of the great toe, lateral sesamoid bone and proximal phalanx of the great toe.
3 M. adductor hallucis. Important muscle for the transverse arch of the foot consisting of the following two heads.
4 Oblique head. Caput obliquum. o: Metatarsals 2-4, lateral cuneiform and cuboid bones. i: Lateral sesamoid bone and proximal phalanx of big toe together with the transverse head. A: Important for stabilization of transverse and longitudinal arches. B
5 Transverse head. Caput transversum. o: Capsules of metatarsophalangeal joints 3-5. i: Lateral sesamoid bone. A: Primary function is to support the transverse arch of the foot. A B
6 M. abductor digiti minimi. o: Calcaneus and plantar aponeurosis. i: Laterally on proximal phalanx of 5th toe. A: Plantar flexion and abduction of the 5th toe. I: Lateral plantar nerve. A B
7 M. flexor digiti minimi brevis. o: Base of 5th metatarsal, long plantar ligament. i: Proximal phalanx of little toe. A: Flexion and abduction of little toe. I: Lateral plantar nerve. A B
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