Muscles of the Foot

Question 1

Abductor digiti minimi attachments

Answer 1

from calcaneal tuberosity to lateral side of proximal phalangeal base of 5th digit

Question 2

Abductor digiti minimi actions

Answer 2

abducts the 5th digit, flexes the 5th digit

Question 3

abductor digiti minimi innervation

Answer 3

lateral plantar nerve (S1-2)

Question 4

Abductor hallucis attachments

Answer 4

from medial calcaneal tuberosity to medial side of proximal phalangeal base of great toe

Question 5

Abductor hallucis actions

Answer 5

abducts and flexes the great toe

Question 6

abductor hallucis innervation

Answer 6

medial plantar nerve (L4-5-S1)

Question 7

Flexor digitorum brevis attachments

Answer 7

from medial process of calcaneal tuberosity to sides of intermediate phalanges of digits 2-5

Question 8

Flexor digitorum brevis actions

Answer 8

flexes toes (proximal IP)

Question 9

flexor digitorum brevis innervation:

Answer 9

medial plantar nerve (L4-L5-S1)

Question 10

quadratus plantae attachments

Answer 10

from medial surface of calcaneus & lateral process of calcaneal tuberosity to long flexor tendons via the flexor digitorum longus

Question 11

quadratus plantae actions

Answer 11

assists flexor digitorum longus with toe flexion at PIP AND DIP

Question 12

quadratus plantae innervation

Answer 12

lateral plantar nerve (S1-2)

Question 13

lumbricals attachments

Answer 13

from tendons of flexor digitorum longus to medial sides of dorsal expansions of digits 2-5

Question 14

lumbricals actions

Answer 14

flexes proximal phalanges (MTP), and extend IP joints

Question 15

lumbricals innervation

Answer 15

1st- medial plantar nerve & 2nd-4th- lateral plantar nerve (1st: L4-5-S1; 2nd -4th: S1-2)

Question 16

adductor hallucis attachments

Answer 16

from 2-4th metatarsal bases (oblique head) & distal ends of 3-5 metatarsal (transverse head) to lateral base of the proximal phalanx of great toe

Question 17

adductor hallucis actions

Answer 17

adducts great toe

Question 18

adductor hallucis innervation

Answer 18

lateral plantar nerve (S1-2)

Question 19

flexor digiti minimi brevis attachments

Answer 19

from 5th metatarsal base to proximal phalangeal base of the 5th digit

Question 19

flexor digiti minimi brevis attachments

Question 20

flexor digiti minimi brevis actions

Answer 20

flexion of 5th digit (MP-metatarsophalangeal joint )

Question 21

flexor digiti minimi brevis innervation

Answer 21

lateral plantar nerve (S1-2)

Question 22

flexor hallucis brevis attachments

Answer 22

from cuboid & tendon of tibialis posterior to base of the proximal phalanx of great toe

Question 23

flexor hallucis brevis actions

Answer 23

• flexion of great toe (MP)

Question 24

flexor hallucis brevis innervation

Answer 24

medial plantar nerve (L4-5-S1)

Question 25

plantar interossei attachments

Answer 25

from plantar surface of base of metatarsals to dorsal digital expansions of digits 3-5

Question 26

plantar interossei actions

Answer 26

adducts & flexes (MP) digits 3-5

Question 27

plantar interossei innervation

Answer 27

lateral plantar nerve (S1-2)

Question 28

dorsal interossei attachments (4 muscles)

Answer 28

from metatarsal shafts to proximal phalangeal bases & dorsal digital expansions of digits 2-4

Question 29

dorsal interossei actions

Answer 29

abducts and flexes (MP) digits 2-4

Question 30

dorsal interossei innervation

Answer 30

lateral plantar nerve (S1-2)

Question 31

extensor digitorum brevis attachments (dorsal surface of the foot)

Answer 31

from anterolateral calcaneus to dorsal aspect of the base of the proximal phalanx (digit 1 for EHB) or to the lateral side of tendons of extensor digitorum longus (digits 2-4 for EDB)

Question 32

extensor digitorum brevis actions

Answer 32

extension of digits 2-5 (MP & IP; EDB) and extension of digit 1 (EHB)

Question 33

extensor digitorum brevis innervation

Answer 33

deep fibular nerve brevis (L4-5-S1; medial slip of this muscle is extensor hallucis brevis)

Question 34

extensor hallucis brevis attachments

Answer 34

from anterolateral calcaneus to dorsal aspect of the base of the proximal phalanx of the great toe

Question 35

extensor hallucis brevis actions

Answer 35

extends the great toe at the metatarsophalangeal joint

Question 36

extensor hallucis brevis innervation

Answer 36

deep fibular nerve (L4-L5-S1)