Foot muscle attachments

Question 1

What are the intrinsic muscles on the dorsal aspect of the foot?

Answer 1

1. extensor digitorum brevis

2. extensor hallucis brevis

Question 2

What is the origin of extensor digitorum brevis?

Answer 2

superolateral surface of the calcaneus

Question 3

What is the insertion of extensor digitorum brevis?

Answer 3

lateral sides of the tendons of extensor digitorum longus of toes II to IV

Question 4

What is the innervation of extensor digitorum brevis?

Answer 4

deep fibular nerve

Question 5

What is the function of extensor digitorum brevis?

Answer 5

extension of toes II to IV

Question 6

What is the origin of extensor hallucis brevis?

Answer 6

superolateral surface calcaneus

Question 7

What is the insertion of extensor hallucis brevis?

Answer 7

base of proximal phalanx of great toe

Question 8

What is the innervation to extensor hallucis brevis?

Answer 8

extension of metatarsophalangeal joint of great toe

Question 9

What are the muscles in the 1st layer of the plantar surface of the foot and what aponeurosis is the first thing you see?

Answer 9

1. flexor digitorum brevis
2. abductor hallucis
3. abductor digiti minimi

plantar aponeurosis

Question 10

What are the muscles and tendons in the 2nd layer of the plantar surface of the foot?

Answer 10

1. lumbricals
2. quadratus plantae
3. flexor digitorum longus tendon
4. flexor hallucis longus tendon

Question 11

What are the muscles and tendons in the 3rd layer of the plantar surface of the foot ?

Answer 11

1. adductor hallucis - oblique and transverse head
2. flexor hallucis brevis
3. flexor digiti minimi brevis
4. tendon of fibularis longus

Question 12

What are the muscles in the 4th layer of the plantar surface of the foot?

Answer 12

1. plantar interossei - PAD

2. dorsal interossei - DAB

Question 13

What is the origin of abductor hallucis and what layer is it in?

Answer 13

medial process of the calcaneal tuberosity

1st layer

Question 14

What is the insertion of abductor hallucis?

Answer 14

medial side of base of proximal phalanx of great toe

Question 15

What is the innervation of abductor hallucis?

Answer 15

medial plantar nerve from the tibial nerve

Question 16

What is the function of abductor hallucis?

Answer 16

1. abducts the great toe at metatarsophalangeal joint

2. flexes the great toe at metatarsophalangeal joint

Question 17

What is the origin of flexor digitorum brevis and what layer is it in?

Answer 17

1. medial process of calcaneal tuberosity

2. plantar aponeurosis

Question 18

What is the insertion of flexor digitorum brevis?

Answer 18

sides of the plantar surface of middle phalanges of lateral 4 toes

Question 19

What is the innervation of flexor digitorum brevis?

Answer 19

medial plantar nerve from tibial nerve

Question 20

What is the function of flexor digitorum brevis?

Answer 20

flexes lateral 4 toes at proximal interphalangeal joints

Question 21

What is the origin for abductor digiti minimi?

Answer 21

1. lateral and medial process of calcaneal tuberosity

2. band of connective tissue connecting calcaneus with base of metatarsal V

Question 22

What is the insertion of abductor digiti minimi?

Answer 22

lateral side of base of proximal phalanx of the little toe

Question 23

What is the innervation of abductor digiti minimi?

Answer 23

lateral plantar nerve from tibial nerve

Question 24

What is the function of abductor digiti minimi?

Answer 24

1. abducts little toe at the metatarsophalangeal joint

Question 25

What is the origin of quadratus plantae and what layer does it belong to?

Answer 25

1. medial surface of calacaneus | 2. lateral process of calcaneal tuberosity

Question 26

What is the insertion of quadratus plantae?

Answer 26

1. lateral side of tendon of flexor digitorum longus in proximal sole of the foot

Question 27

What is the innervation of quadratus plantae?

Answer 27

lateral plantar nerve from tibial nerve

Question 28

What is the function of quadratus plantae?

Answer 28

1. assists flexor digitorum tendon in flexing toes II to V

Question 29

What is the origin of the lumbricals and what layer are they found in?

Answer 29

1st lumbrical 1. medial side of tendon of flexor digitorum longus associated with toe II 2nd, 3rd and 4th lumbricals 1. adjacent surfaces of adjacent tendons of flexor digitorum longus 2nd layer

Question 30

What is the insertion of lumbricals?

Answer 30

medial free margins of extensor hoods of toes II to V

Question 31

What is the innervation of lumbricals?

Answer 31

1st lumbrical 1. medial plantar nerve from the tibialnerve 2nd, 3rd and 4th lumbrical 1. lateral plantar nerve from tibial nerve

Question 32

What is the function of the lumbricals?

Answer 32

1. flexion of metatarsophalnageal joint | 2. extension of interphalangeal joints

Question 33

What is the origin of flexor hallucis brevis and what layer is it in?

Answer 33

1. plantar surface of cuboid 2. laterla cuneiform 3. tendon of tibialis posterior 3rd layer

Question 34

What is the insertion of flexor hallucis brevis?

Answer 34

1. lateral and medial sides of base of proximal phalanx of the great toe

Question 35

What is the innervation of flexor hallucis brevis?

Answer 35

medial plantar nerve from tibial nerve

Question 36

What is the function of flexor hallucis brevis?

Answer 36

flexes metatarsophalangeal joint of the great toe

Question 37

What is the origin of adductor hallucis and what layer does it belong to?

Answer 37

transverse head 1. ligaments associated with metatarsophalangeal joints of the lateral 3 toes Oblique head 1. bases of metatarsals II to V 2. from sheath covering fibularis longus 3rd layer

Question 38

What is the insertion of adductor hallucis?

Answer 38

lateral side of base of proximal phalanx of great toe

Question 39

What is the innervation of adductor hallucis?

Answer 39

lateral plantar nerve from the tibial nerve

Question 40

What is the function of adductor hallucis?

Answer 40

adducts great toe at metatarsophalangeal joint

Question 41

What is the origin of flexor digiti minimi and what layer does it belong to?

Answer 41

1. base of metatarsal V 2. related sheaths of fibulas longus tendon 3rd layer

Question 42

What is the insertion of flexor digiti minimi brevis?

Answer 42

1. lateral side of base of proximal phalanx of little toe

Question 43

What is the innervation to flexor digiti minimi brevis?

Answer 43

lateral plantar nerve from tibial nerve

Question 44

What is the function of flexor digiti minimi brevis?

Answer 44

flexes little toe at metatarsophalangeal joint

Question 45

What is the origin of the dorsal interossei and what layer does it belong to?

Answer 45

1. sides of adjacent metatarsals 4th layer

Question 46

What is the insertion of dorsal interossei?

Answer 46

1. extensor hoods | 2. bases of proximal phalanges of toes II to IV

Question 47

What is the innervation of dorsal interossei?

Answer 47

1. lateral plantar nerve from tibial nerve

Question 48

What is the function of dorsal interossei?

Answer 48

1. abduction of toes II to IV at metatarsophalangeal joints 2. resist extension of metatarsophalangeal joints 3. flexion of interphalangeal joints

Question 49

What is the origin of plantar interossei and what layer does it belong to?

Answer 49

medial sides of metatarsals of toes III to V 4th layer

Question 50

What is the insertion of plantar interossei?

Answer 50

1. extensor hoods | 2. bases of proximal phalanges of toes III to V

Question 51

What is the innervation to plantar interossei?

Answer 51

lateral plantar nerve from tibial nerve

Question 52

What is the function of plantar interossei?

Answer 52

1. adduction of toes III to V at metatarsophalangeal joints 2. reisst extension of the metatarsophalangeal joints 3. flexion of inetrphalangeal joints