Muscles of the foot

Question 1

How can the muscles in the foot be divided?

Answer 1

they can be divided into the plantar and dorsum of the foot,

Question 2

How are the muscles in the plantar division further divided?

Answer 2

Muscles of the great toe
Muscles of the 5th digit
Muscles of 2- 5 digits

Question 3

What are the muscles of the great toe

Answer 3

Abductor Hallicus
N - medial plantar nerve
A - Abducts and flexes big toe

Flexor Hallicus brevis ( Has two heads, medial & lateral)
N - medial plantar nerve
A - Flexs proximal phalanx of 1st digit

Adductor Hallicus ( Has two heads oblique and transverse)
N - lateral plantar nerve
A - adducts the 1st digit, assists support of transverse arch.

found on the medial side of the sole of the foot.

Question 4

Muscles of the 5th digit

Answer 4

Abductor digit minimi
N- lateral plantar nerve
A-Abducts and flexs 5th phalanx

Flexor digiti minimi
N- lateral plantar nerve
A- Flexes proximal phalanx of 5th digit.

Found on sole of the lateral foot

Question 5

Muscles of the 2nd - 5th digit

Answer 5

Flexor digitiorum brevis
N-medial plantar nerve
A- flexes digits 2 - 5

Quadraturs plantae
DA - is the posterior aspect of flexor digitorum longus tendon. Therefor the contraction of Quadraturs Plantae enchances the action of FDL
N- Lateral plantar nerve
A- assists FDL flex digits 2 - 5

Lumbricals (digits 2-5)
PA - Flexor Digitorum Longus
N - digit 2 - medial plantar nerve
digits 3 - 4 - lateral plantar nerve
A - Flex proximal phalanges, extends middle and distal phalanges.

Found centrally on the sole of the foot

Question 6

What is considered the midline of the foot

Answer 6

The midline is from the 2nd digit of the foot

Question 7

What is the nerve supply and action of the plantar interossei

Answer 7

N - Lateral plantar nerve

A - Adducts digits 3 - 5, some flexion of the metatsophalangeal joints

Question 8

What is the nerve supply and action of the dorsal interossei

Answer 8

N - Lateral plantar nerve

A- abducts digits 2 - 4, some flexion of the metatsophalangeal joints

Question 9

What muscles are on the dorsal surface of the foot

Answer 9

Extensor digitorum brevis
N- Deep fibular nerve
A- Extend the digits 2 -5

Extensor hallicus brevsi
N - Deep fibular nerve
A - Extension of the great toe

Considered to be different parts of the same muscles