Exam 1 - Foot Flashcards

1
Q

What are the muscles of the forefoot?

A

Dorsal interosseous muscles, Plantar interosseous muscles, Extensor hallucis brevis, Extensor digitorum brevis

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2
Q

What are the muscles of the 1st layer of the Sole of the foot?

A

Abductor digiti minimi, Flexor digitorum brevis, Abductor hallucis

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3
Q

What are the muscles of the 2nd layer of the Sole of the foot?

A

Quadratus plantae, lumbricals

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4
Q

What are the muscles of the 3rd layer of the Sole of the foot?

A

Flexor digiti minimi brevis, Adductor hallucis, Flexor hallucis brevis

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5
Q

What are the muscles of the 4th layer of the Sole of the foot?

A

Plantar interossei muscles and Dorsal interossei muscles

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6
Q

What is the origin of Abductor hallucis?

A

medial side of the tuberosity of calcaneus

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7
Q

What is the insertion of Abductor hallucis?

A

medial side of the base of the proximal phalanx of the great toe (hallux)

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8
Q

What are the functions of Abductor hallucis?

A

abducts the great toe; flexes the metatarsophalageal joint

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9
Q

What innervates Abductor hallucis?

A

medial plantar nerve

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10
Q

What supplies blood to Abductor hallucis?

A

medial plantar a.

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11
Q

What is the origin of Flexor hallucis brevis?

A

cuboid, lateral cuneiform, medial side of the first metatarsal

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12
Q

What is the insertion of Flexor hallucis brevis?

A

medial belly: medial side of proximal phalanx of the great toe; lateral belly: lateral side of the proximal phalanx of the great toe

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13
Q

What are the functions of Flexor hallucis brevis?

A

flexes the metatarsophalangeal joint of the great toe

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14
Q

What innervates Flexor hallucis brevis?

A

medial plantar n.

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15
Q

What supplies blood to Flexor hallucis brevis?

A

medial plantar a.

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16
Q

What is the origin of Flexor digitorum brevis?

A

tuberosity of the calcaneus, plantar aponeurosis, intermuscular septae

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17
Q

What is the insertion of Flexor digitorum brevis?

A

base of the middle phalanx of digits 2-5 after splitting to allow passage of the flexor digitorum longus tendons

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18
Q

What are the functions of Flexor digitorum brevis?

A

flexes the metatarsophalangeal & proximal interphalangeal joints of digits 2-5

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19
Q

What innervates Flexor digitorum brevis?

A

medial plantar nerve

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20
Q

What supplies blood to Flexor digitorum brevis?

A

medial and lateral plantar aa.

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21
Q

What is the origin of Quadratus plantae?

A

anterior portion of the calcaneus and the long plantar ligament

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22
Q

What is the insertion of Quadratus plantae?

A

tendons of the flexor digitorum longus m.

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23
Q

What are the functions of Quadratus plantae?

A

assists the flexor digitorum longus in flexing the toes

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24
Q

What innervates Quadratus plantae?

A

lateral plantar nerve

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25
Q

What supplies blood to Quadratus plantae?

A

lateral plantar a.

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26
Q

What is the origin of the Lumbricals of the foot?

A

tendons of the flexor digitorum longus

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27
Q

What is the insertion of the Lumbricals of the foot?

A

medial side of the extensor expansion of digits 2-5

28
Q

What are the functions of the Lumbricals of the foot?

A

flex the metatarsophalangeal joint, extend the proximal interphalangeal & distal interphalangeal joints of digits 2-5

29
Q

What innervates the Lumbricals of the foot?

A

medial (1st) lumbrical: medial plantar nerve; lateral three lumbricals: lateral plantar nerve

30
Q

What supplies blood to the Lumbricals of the foot?

A

medial and lateral plantar aa.

31
Q

What is the origin of Adductor hallucis?

A

oblique head: bases of metatarsals 2-4; transverse head: heads of metatarsals 3-5

32
Q

What is the insertion of Adductor hallucis?

A

lateral side of base of the proximal phalanx of the great toe

33
Q

What are the functions of Adductor hallucis?

A

adducts the great toe (moves it toward midline of the foot; i.e.toward the 2nd digit)

34
Q

What innervates Adductor hallucis?

A

deep branch of the lateral plantar nerve

35
Q

What supplies blood to Adductor hallucis?

A

plantar arterial arch

36
Q

What is the origin of Extensor hallucis brevis?

A

superolateral surface of the calcaneus

37
Q

What is the insertion of Extensor hallucis brevis?

A

dorsum of base of proximal phalanx of the great toe

38
Q

What are the functions of Extensor hallucis brevis?

A

extends the great toe

39
Q

What innervates Extensor hallucis brevis?

A

deep fibular (peroneal) nerve

40
Q

What supplies blood to Extensor hallucis brevis?

A

dorsalis pedis a.

41
Q

What is the origin of Extensor digitorum brevis?

A

superolateral surface of the calcaneus

42
Q

What is the insertion of Extensor digitorum brevis?

A

extensor expansion of toes 1-4

43
Q

What are the functions of Extensor digitorum brevis?

A

extends toes 1-4

44
Q

What innervates Extensor digitorum brevis?

A

deep fibular (peroneal) nerve

45
Q

What supplies blood to Extensor digitorum brevis?

A

dorsalis pedis a.

46
Q

What is the origin of Dorsal interosseous muscles?

A

shafts of adjacent metatarsal bones

47
Q

What is the insertion of Dorsal interosseous muscles?

A

bases of the proximal phalanges for digit 2 (both sides) & digits 3,4 (lateral side)

48
Q

What are the functions of Dorsal interosseous muscles?

A

abduct digits 2-4 (move these digits away from midline as defined by a plane passing through the 2nd digit); flex the metatarsophalangeal joints and extend the interphalangeal joints of those digits

49
Q

What innervates Dorsal interosseous muscles?

A

deep branch of the lateral plantar nerve

50
Q

What supplies blood to Dorsal interosseous muscles?

A

dorsal metatarsal aa.

51
Q

What is the origin of Plantar interosseous muscles?

A

base and medial side of metatarsals 3-5

52
Q

What is the insertion of Plantar interosseous muscles?

A

bases of proximal phalanges and extensor expansions of digits 3-5

53
Q

What are the functions of Plantar interosseous muscles?

A

adduct digits 3-5 (move these digits toward the midline of the foot as defined by a plane through the second digit); flex the metacarpophalangeal and extend interphalangeal joints of digits 3-5

54
Q

What innervates Plantar interosseous muscles?

A

deep branch of the lateral plantar nerve

55
Q

What supplies blood to Plantar interosseous muscles?

A

plantar metatarsal aa.

56
Q

What is the origin of Abductor digiti minimi?

A

medial and lateral sides of the tuberosity of the calcaneus

57
Q

What is the insertion of Abductor digiti minimi?

A

lateral side of the base of the proximal phalanx of the 5th digit

58
Q

What are the functions of Abductor digiti minimi?

A

abducts the 5th toe; flexes the metatarsophalageal joint

59
Q

What innervates Abductor digiti minimi?

A

lateral plantar nerve

60
Q

What supplies blood to Abductor digiti minimi?

A

lateral plantar a.

61
Q

What is the origin of Flexor digiti minimi brevis?

A

base of 5th metatarsal bone

62
Q

What is the insertion of Flexor digiti minimi brevis?

A

lateral side of base of proximal phalanx of 5th digit

63
Q

What are the functions of Flexor digiti minimi brevis?

A

flexes the metatarsophalangeal joint of the 5th digit

64
Q

What innervates Flexor digiti minimi brevis?

A

lateral plantar nerve

65
Q

What supplies blood to Flexor digiti minimi brevis?

A

lateral plantar a.

66
Q

What are the muscles in the central compartment of the Sole of the foot?

A

Central - flexor digitorum brevis, quadratus plantae, lumbricals, adductor hallucis

67
Q

What are the muscles in the dorsal compartment of the Sole of the foot?

A

Dorsal - extensor hallucis brevis, extensor digitorum brevis