Third Layer Muscles of Sole of Foot

Question 0

Adductor Hallucis

Answer 0

Origin: (Oblique head) bases of 2nd-4th metatarsals; (Transverse head) plantar ligaments of 3rd-5th metatarsophalangeal joints

Insertion: Tendons of both heads attach to lateral side of base of proximal phalanx of 1st digit

Innervation: Deep branch of lateral plantar nerve (S2, S3)

Question 1

Flexor Hallucis Brevis

Answer 1

Origin: Plantar surfaces of cuboid and lateral cuneiform

Insertion: Both sides of base of proximal phalanx of 1st digit

Innervation: Medial Plantar Nerve (S2, S3)

Question 2

Flexor Digiti Minimi

Answer 2

Origin: Base of 5th metatarsal

Insertion: Base of proximal phalanx of 5th digit

Innervation: Superficial branch of lateral plantar nerve (S2, S3)