First layer of plantar foot

Question 1

Muscles of first layer of plantar foot

Answer 1

Abductor hallucis
Flexor digitorum brevis
Abductor digiti minimi

Question 2

Origin of abductor hallucis

Answer 2

Medial tubercle of calcaneus
Flexor retinaculum
Plantar aponeurosis

Question 3

Insertion of abductor hallucis

Answer 3

Medial base of proximal phalanx of big toe

Question 4

Action of abductor hallucis

Answer 4

Abduction and Flexion of big toe

Question 5

Innervation of abductor hallucis

Answer 5

Medial plantar nerve

Question 6

Origin of flexor digitorum brevis

Answer 6

Medial tubercle of calcaneus

Plantar aponeurosis

Question 7

Insertion of flexor digitorum brevis

Answer 7

Middle phalanges of lateral 4 toes

Question 8

Action of flexor digitorum brevis

Answer 8

Flexion of lateral 4 toes at PIP joints

Question 9

Innervation of flexor digitorum brevis

Answer 9

Medial plantar nerve

Question 10

Origin of abductor digiti minimi

Answer 10

Medial and lateral tubercles of calcaneus

Plantar aponeurosis

Question 11

Insertion of abductor digiti minimi

Answer 11

Lateral base of proximal phalanx of little toe

Question 12

Action of abductor digiti minimi

Answer 12

Abducts and flexes little toe

Question 13

Innervation of abductor digiti minimi

Answer 13

Lateral plantar nerve

Question 14

What is medial plantar nerve entrapment

Answer 14

Compression of medial plantar nerve as it passes deep to abductor hallucis

Question 15

Where is the first layer of plantar foot

Answer 15

Most superficial to sole

Immediately underneath plantar fascia

Question 16

Common cause of medial plantar nerve entrapment

Answer 16

Repetitive eversion of foot e.g gymnastics

Question 17

Symptoms of medial plantar nerve entrapment

Answer 17

Pain, numbness and paraesthesia on medial side of sole of foot