Muscles Of The Foot

Front 1

Abductor hallucis origin

Back 1

*calcaneus

*plantar aponeurosis

*flexor retinaculum

Front 2

Abductor hallucis insertion

Back 2

medial side of base of proximal phalanx of digit #1

Front 3

Abductor hallucis innervation

Back 3

medial plantar nerve (S2, S3)

Front 4

Abductor hallucis action

Back 4

*abduction of toe #1

*supports medial longitudinal arch

Front 5

Flexor digitorum brevis origin

Back 5

*calcaneus

*plantar aponeurosis

Front 6

Flexor digitorum brevis insertion

Back 6

on both sides of the base of the middle phalanx of digits #2-5

Front 7

Flexor digitorum brevis innervation

Back 7

medial plantar nerve (S2, S3)

Front 8

Flexor digitorum brevis action

Back 8

*flexes digits #2-5 at PIP

*supports medial and lateral longitudinal arches

Front 9

Abductor digiti minimi origin

Back 9

*calcaneus

*plantar aponeurosis

Front 10

Abductor digiti minimi insertion

Back 10

*lateral side of base of proximal phalanx of digit #5

Front 11

Abductor digiti minimi innervation

Back 11

medial plantar nerve (S2, S3)

Front 12

Abductor digiti minimi action

Back 12

*abducts digit #5

*supports lateral longitudinal arch

Front 13

Quadratus plantae origin

Back 13

medial and lateral sides of calcaneus

Front 14

Quadratus plantae insertion

Back 14

margin of tendon of flexor digitorum longus

Front 15

Quadratus plantae innervation

Back 15

lateral plantar nerve (S2, S3)

Front 16

Quadratus plantae action

Back 16

helps flexor digitorum longus flex digits #2-5

Front 17

Lumbricals origins

Back 17

Tendons of flexor digitorum longus

Front 18

lumbricals insertions

Back 18

base of proximal phalanx and extensor expansions of digits #2-5

Front 19

lumbricals innervations

Back 19

#1 (to digit #2): medial plantar nerve (S2, S3)

#2-4 (to digit #3-5): lateral plantar nerve (S2, S3)

Front 20

lumbricals action

Back 20

*flexes MTP joint

*PIP and DIP extension

Front 21

Flexor hallucis brevis origin

Back 21

*cuboid

*lateral cuneiform

Front 22

Flexor hallucis brevis insertion

Back 22

medial head:

*medial side of base of proximal phalanx of digit #1

lateral head:

*lateral side of base of proximal phalanx of digit #1

Front 23

Flexor hallucis brevis innervation

Back 23

medial plantar nerve (S2, S3)

Front 24

Flexor hallucis brevis action

Back 24

*flexion of 1st MTP joint

*supports medial longitudinal arch

Front 25

Adductor hallucis origin

Back 25

transverse head:

*plantar ligaments of MTP joints of digits #2-5

oblique head:

*bases of metatarsals #2-4

Front 26

Adductor hallucis insertion

Back 26

lateral side of base of proximal phalanx of digit #1

Front 27

Adductor hallucis innervation

Back 27

lateral plantar nerve (S2, S3)

Front 28

Adductor hallucis action

Back 28

*adducts digit #1

*supports transverse arch

Front 29

Flexor digiti minimi brevis origin

Back 29

base of metatarsal #5

Front 30

Flexor digiti minimi brevis insertion

Back 30

base of proximal phalanx of 5th digit

Front 31

Flexor digiti minimi brevis innervation

Back 31

lateral plantar nerve (S2, S3)

Front 32

Flexor digiti minimi brevis action

Back 32

flexes digit #5 at MTP joint

Front 33

Plantar interossei origin

Back 33

medial side of base of metatarsals #2, 3, 4

Front 34

Plantar interossei insertion

Back 34

medial side of base of proximal phalanx of digits #3, 4, and 5

Front 35

Plantar interossei innervation

Back 35

lateral plantar nerve (S2, S3)

Front 36

Plantar interossei action

Back 36

*adduct digits #3, 4, 5

*helps with MTP flexion

Front 37

Dorsal interossei origin

Back 37

*adjacent sides of metatarsals #1-5 to form bipennate muscles

Front 38

Dorsal interossei insertion

Back 38

DI #1 and #2

*insert on medial and lateral sides proximal phalanx of digit #2

DI # 3 and #4

*insert on lateral side of proximal phalanx of digit #3 and #4

Front 39

Dorsal interossei innervation

Back 39

lateral plantar nerve (S2, S3)

Front 40

Dorsal interossei action

Back 40

*abducts digits #2, 3, and 4

*helps with MTP flexion

Front 41

Extensor digitorum brevis origin

Back 41

calcaneus

Front 42

extensor digitorum brevis insertion

Back 42

extensor expansion of digits #2 - 5

Front 43

extensor digitorum brevis innervation

Back 43

deep fibular nerve (L5, S1)

Front 44

extensor digitorum brevis action

Back 44

Extends DIP and PIP joints in digits #2-5

Front 45

extensor hallucis brevis origin

Back 45

extensor digitorum brevis

Front 46

extensor hallucis brevis insertion

Back 46

base of proximal phalanx of digit #1

Front 47

extensor hallucis brevis innervation

Back 47

deep fibular nerve (L4, L5)

Front 48

extensor hallucis brevis action

Back 48

extends toe #1