Muscle Chart: 3rd Plantar Surface Layer

Question 1

Flexor Hallucis Brevis

Origin, Insertion, Innervation, Blood Supply

Answer 1

Origin: Plantar surfaces of cuboid and lateral cuneiform

Insertion: Medial and lateral surfaces of the base of proximal phalanx

Innervation: Medial plantar nerve (tibial) (L4, L5, S1)

Blood Supply: Medial plantar artery

Question 2

Flexor Hallucis Brevis Movements

Answer 2

Flex the first toe at MTP joint

Question 3

Adductor Hallucis

Origin, Insertion, Innervation, Blood Supply

Answer 3

Origin: Oblique head: Bases of 2-4 metatarsals; Transverse head: Plantar ligament of 3-5 MTP joints

Insertion: Lateral surface of base of proximal phalanx of 1st toe

Innervation: Lateral plantar nerve (tibial) (S1, S2)

Blood Supply: Lateral plantar artery

Question 4

Adductor Hallucis Movements

Answer 4

Adduct the 1st toe

Assist to flex the 1st toe

Assist to maintain transverse arch of foot

Question 5

Flexor Digiti Minimi

Origin, Insertion, Innervation, Blood Supply

Answer 5

Origin: Base of 5th metatarsal

Insertion: Base of proximal phalanx of 5th toe

Innervation: Lateral plantar nerve (tibial) (S1, S2)

Blood Supply: Lateral plantar artery

Question 6

Flexor Digiti Minimi Movements

Answer 6

Flex the 5th toe MTP joints