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Flashcards in Foot Deck (41):
1

What are the attachments of extensor digitorum brevis?

Origin - calcaneus, interosseous talocalcaneal ligament and inferior extensor retinaculum
Insertion - long extensor tendons of lateral 4 digits

2

What are the actions of extensor digitorum brevis?

Extension of lateral 4 digits at metatarsophalangeal and interphalangeal joints

3

Which nerve supplies the muscles of the dorsum of the foot?

Deep fibular nerve

4

What are the muscles of the dorsum of the foot called?

Extensor digitorum brevis and extensor hallucis brevis

5

What are the attachments of extensor hallucis brevis?

Origin - calcaneus, interosseous talocalcaneal ligament and inferior extensor retinaculum
Insertion - base of proximal phalanx of big toe

6

What are the actions of extensor hallucis brevis?

Extension of the big toe at metatarsophalangeal joint

7

How many layers of muscles does the plantar aspect of the foot have?

Four

8

Which muscles make up the first layer of the plantar aspect of the foot?

Flexor digitorum brevis, abductor hallucis and abductor digiti minimi

9

What are the attachments of flexor digitorum brevis?

Origin - medial tubercle of calcaneus and plantar aponeurosis
Insertion - middle phalanges of lateral 4 digits

10

What are the actions of flexor digitorum brevis?

Flexion of lateral 4 digits at proximal interphalangeal joint

11

What nerve supplies flexor digitorum brevis?

Medial plantar nerve

12

What are the attachments of abductor hallucis?

Origin - medial tubercle of calcaneus, flexor retinaculum and plantar aponeurosis
Insertion - medial base of proximal phalanx of big toe

13

What are the actions of abductor hallucis?

Abduction and flexion of big toe

14

What nerve supplies abductor hallucis?

Medial plantar nerve

15

What are the attachments of abductor digiti minimi?

Origin - medial and lateral tubercles of calcaneus and plantar aponeurosis
Insertion - lateral base of proximal phalanx of fifth digit

16

What are the actions of abductor digiti minimi?

Abduction and flexion of fifth toe

17

Which nerve supplies abductor digiti minimi?

Lateral plantar nerve

18

Which muscles are in the second layer of the plantar aspect of the foot?

Lumbricals and quadratus plantae
Also tendons of flexor hallucis longus and flexor digitorum longus

19

What are the actions of the lumbricals?

Flexion at metatarsophalangeal joints and extension at interphalangeal joints

20

What are the attachments of quadratus plantae?

Origin - medial and lateral plantar surface of calcaneus
Insertion - tendons of flexor digitorum longus

21

What is the action of quadratus plantae?

Flexion of lateral 4 digits

22

Which nerve supplies quadratus plantae?

Lateral plantar nerve

23

Which muscles make up the third layer of the plantar aspect of the foot?

Flexor hallucis brevis, flexor digiti minimi and adductor hallucis

24

What are the two heads of adductor hallucis called?

Transverse and oblique heads

25

Which muscles make up the fourth layer of the plantar aspect of the foot?

Dorsal and plantar interossei

26

How many dorsal interossei are there?

Four

27

How many plantar interossei are there?

Three

28

What action do the dorsal interossei have?

Abduction of the toes

29

What action do the plantar interossei have?

Adduction of the toes

30

Which muscles are responsible for extension of the big toe?

Extensor hallucis longus and brevis

31

Which muscles are responsible for flexion of the big toe?

Flexor hallucis longus, flexor hallucis brevis and abductor hallucis

32

Which muscle is responsible for abduction of the big toe?

Abductor hallucis

33

Which muscle is responsible for adduction of the big toe?

Adductor hallucis

34

Which muscles are responsible for extension of the lateral four toes?

Extensor digitorum longus and brevis

35

Which muscles are responsible for flexion of the lateral four toes?

Flexor digitorum longus, flexor digitorum brevis and quadratus plantae

36

Which muscles are responsible for abduction of the lateral four toes?

Dorsal interossei

37

Which muscles are responsible for adduction of the lateral four toes?

Plantar interossei

38

Which muscles are responsible for flexion of the fifth toe?

Flexor digitorum longus, flexor digitorum brevis, quadratus plantae, abductor digiti minimi, flexor digiti minimi

39

Which muscles are responsible for extension of the fifth toe?

Extensor digitorum longus and brevis

40

Which muscle is responsible for abduction of the fifth toe?

Abductor digiti minimi

41

Which muscle is responsible for adduction of the fifth toe?

Plantar interossei