Sole of Foot Muscle Chart

Question 1

Flexor Digitorum Brevis action

Answer 1

Flexes lateral 4 digits

Question 2

Abductor Hallucis action

Answer 2

Abducts and flexes great toe

Question 3

Abductor digiti minimi action

Answer 3

Abducts and flexes 5th digit

Question 4

Lumbricals action

Answer 4

Flex proximal phalanges; extend middle and distal phalanges of lateral 4 digits

Question 5

Quadratus Plantae action

Answer 5

Assists flexor digitorum longus in flexing lateral 4 digits

Question 6

Adductor hallucis action

Answer 6

Traditionally said to adduct 1st digit; makes up part of transverse arch of foot

Question 7

Flexor hallucis brevis action

Answer 7

Flexes proximal phalanx of 1st digit

Question 8

Plantar interossei
(3 muscles) action

Answer 8

Adducts digits 3-5 and flex metatarsophalangeal joints

Question 9

Dorsal interossei
(4 muscles) action

Answer 9

Abduct digits 2-4 and flex metatarsophalangeal joints

Question 10

Medial Plantar Nerve Innervations

Answer 10

Flexor Digitorum Brevis
Abductor Hallucis
Flexor Hallucis Brevis
(Medial Lumbrical)

Question 11

Lateral Plantar Nerve Innervations

Answer 11

Abductor digiti minimi
Quadratus plantae
Plantar Interossei
Dorsal Interossei
(Lateral three lumbricals)

Question 12

Lumbrical Innervation

Answer 12

Medial lumbrical: Medial Plantar Nerve
Lateral lumbricals (3): Lateral Plantar Nerve

Question 13

Adductor Hallucis Innervation

Answer 13

Deep branch of lateral plantar nerve