Foot muscles

Question 1

Dorsum foot muscles (2) + innervation?

Answer 1

1. Extensor digitorum brevis
2. Extensor hallusis brevis

N = deep fibular/ peroneal n

Question 2

Extensor digitorum brevis function?

Answer 2

Extend toes 2-4 at MTP, DIP & IP joints.

Question 3

Extensor hallucis brevis function?

Answer 3

Extend toe 1 @ MTP joint

Question 4

Plantar fascia function?

Answer 4

Maintains foot arches

Question 5

1st layer of muscles in the sole of the foot?

Answer 5

1. Abductor Hallucis
2. Flexor Digitorum Brevis
3. Abductor Digit Minimi

Question 6

1st layer nerve innervation?

Answer 6

Medial plantar n.
1. Abductor Hallucis
2. Flexor Digitorum Brevis

Lateral plantar n.
3. Abductor Digit Minimi

Question 7

1st layer function?

Answer 7

1. Abductor Hallucis (MTP joint)
2. Flexor Digitorum Brevis (MTP, PIP Joint)
3. Abductor Digit Minimi (MTP joint)

Question 8

2nd layer of the sole (4)?

Answer 8

1. Flexor hallucis longus tendon
2. Flexor digitorum longus tendon
3. Quadratus plantae
4. Lumbricals

Question 9

Nerve innervation of 2nd layer of the sole?

Answer 9

3. Quadratus plantae = lateral plantar.
4. Lumbricals
   1 = medial plantar
   2-4 = lateral plantar

Question 10

Function of 2nd layer of the sole?

Answer 10

3. Quadratus plantae
   = assist FDL to flex toes @ MTP, DIP & PIP joints
4. Lumbricals
   =TATA

Question 11

3rd layer of the sole (3)?

Answer 11

1. Flexor Hallucis Brevis
2. Adductor Hallucis
3. Flexor digiti minimi brevis pedis

Question 12

nerve innervation of 3rd layer of the sole?

Answer 12

Medial Plantar:
1. Flexor Hallucis Brevis

Lateral plantar:
2. Adductor Hallucis
3. Flexor digiti minimi brevis pedis

Question 13

function of 3rd layer of the sole?

Answer 13

1. Flexor Hallucis Brevis (MTP joint)
2. Adductor Hallucis (MTP joint)
3. Flexor digiti minimi brevis pedis (MTP joint)

Question 14

4th layer of the sole (2)?
+ nerve innervation + function

Answer 14

1. Plantar interossei (3)
   PAD = add + TATA
2. Dorsal interossei (4)
   DAB = abd + TATA

N = Lateral Plantar n