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MSA II > ankle and foot muscles > Flashcards

ankle and foot muscles Flashcards

1
Q

what are the 2 intrinsic foot muscles located on the dorsal / superior aspect of the foot

A

extensor digitorum brevis
extensor hallucis brevis

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2
Q

extensor digitorum brevis O & I

A

dorsal surface of superior/lateral calcaneus

by tendons of extensor digitorum longus of digits 2-4

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3
Q

extensor digitorum brevis actions and nerve

A

extend toes 2-4 MTP joints

DEEP PERONEAL

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4
Q

extensor hallucis brevis O & I

A

distal part of superior and lateral surfaces of calcaneus

dorsal surface of base of proximal phalanx of big toe

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5
Q

extensor hallucis brevis action and nerve

A

extends MTP joint of big toe

DEEP PERONEAL

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6
Q

what are the 3 muscles in layer 1

A
  1. Abductor hallucis
  2. Abductor digiti minimi
  3. Flexor digitorum brevis
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7
Q

what are the 2 muscles in layer 2

A
  1. Quadratus Plantae
  2. Lumbricals
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8
Q

what are the 3 muscles of layer 3

A
  1. Flexor hallucis brevis
  2. Flexor digiti minimi
  3. Adductor hallucis
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9
Q

what are the 2 muscles in LAYER 4

A
  1. Plantar interossei
  2. Dorsal interossei
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10
Q

Abductor Hallucis O & I

A

medial process of calcaneal tuberosity

medial side of base of proximal phalanx of big toe

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11
Q

Abductor Hallucis actions and nerves

A

abducts and flexes MTP joints of big toe

MEDIAL PLANTAR

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12
Q

Abductor digiti minimi O & I

A

calcaneal tuberosity

base of proximal phalanx of 5th digit

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13
Q

Abductor Digiti Minimi actions and nerve

A

abducts 5th digit

LATERAL PLANTAR

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14
Q

Flexor digitorum brevis O & I

A

calcaneal tuberosity

middle phalanx of digits 2-5

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15
Q

Flexor digitorum brevis actions and nerve

A

flex proximal IP joints

MEDIAL PLANTAR

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16
Q

Quadratus Plantae O & I

A

medial head: medial surface of calcaneus
lateral head: lateral border of the plantar surface of calcaneus

lateral margin and dorsal plantar surface of tendon flexor digitorum longus

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17
Q

Quadratus Plantae action and nerve

A

assist in flexing digits 2-5

LATERAL PLANTAR

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18
Q

what actions do the lumbricals do

A

flex MTP joints and assist in extending the IP joints of 2-5 digits

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19
Q

what are the 2 nerves of the lumbricals

A

1= medial plantar

2-4 = lateral plantar

20
Q

lumbricals Origins

A

1= medial side of 1st flexor digitorum longus tendon

2= adjacent sides of 1st & 2nd flexor digitorum longus tendon

3= adjacent sides of 2 & 3 flexor digitorum longus tendons

4 = adjacent sides of 3rd & 4th flexor digitorum longus tendons

21
Q

what is the insertion of the lumbricals

A

medial side of proximal phalanx & dorsal expansion of extensor digitorum longus tendon of 2-5 digits

22
Q

Flexor hallucis brevis O & I

A

medial part of plantar surface of cuboid bone, lateral cuneiform

medial & lateral sides of base of proximal phalanx of big toe

23
Q

flexor hallucis brevis action and nerve

A

flex MTP joint of big toe

MEDIAL PLANTAR

24
Q

Flexor digiti minimi O & I

A

base of 5th metatarsal

base of proximal phalanx of 5th digit

25
Q

flexor digiti minimi action and nerve

A

flex MTP of digit 5

LATERAL PLANTAR

26
Q

Adductor Hallucis O & I

A

oblique head: bases of metatarsal bones 2-4
transverse head: from plantar MTP ligaments of 3-5 digits

lateral side of base of proximal phalanx of big toe

27
Q

Adductor hallucis action and nerve

A

adducts and assist in flexing MTP of big toe

LATERAL PLANTAR

28
Q

Plantar interossei O & I

A

bases and medial sides of bodies of 3rd-5th metatarsal bones

medial sides of bases of proximal phalanges of same digit

29
Q

Plantar interossei action and nerve

A

adducts digits 3,4,5 toward axial line through 2nd digit

assist in flexion of MTP joints

may assist in extension of IP joints 3,4,5

LATERAL PLANTAR

30
Q

Dorsal Interossei Origin

A

each by 2 heads from adjacent sides of metatarsal bones

31
Q

dorsal interossei insertions

A

side of proximal phalanx
1 = to the medial side of 2nd digit
2-4 = to the lateral sides of digits 2-4

32
Q

actions of dorsal interossei

A

abducts digits 2-4 from axial line through 2nd digit

assist in flexion of MTP joints

may assist in extension of IP joints of digits 2-4

33
Q

dorsal interossei nerve

A

LATERAL PLANTAR

34
Q

TOE MOVEMENTS:

1st toe flexion - what 2 muscles

A

flexor hallucis longus & brevis

35
Q

TOE MOVEMENTS:

what 3 muscles do toe 2-5 flexion

A

flexor digitorum longus & brevis
lumbricals

36
Q

TOE MOVEMENTS:

what 2 muscles do 1st toe extension

A

extensor hallucis longus & brevis

37
Q

TOE MOVEMENTS:

what 2 muscles do toe 2-5 extension

A

extensor digitorum longus & brevis

38
Q

what muscle does abduction

A

dorsal interossei

39
Q

what muscle does adduction

A

plantar interossei

40
Q

what muscles are part of the anterior crural mm group (4)

A

tibialis anterior
extensor digitorum longus
extensor hallucis longus
fibularis tertius

41
Q

what muscles are part of the lateral crural mm group (2)

A

fibularis longus
fibularis brevis

42
Q

what muscles are part of the superficial posterior compartment (3)

A

gastrocs
soleus
plantaris

43
Q

what muscles are in the deep posterior mm group (4)

A

popliteus
tibialis posterior
flexor digitorum longus
flexor hallucis longus

44
Q

what muscles are innervated by the LATERAL plantar nerve (7)

A

abductor digiti minimi
quadratus plantae
lumbricals digits 2-4
flexor digiti minimi
adductor hallucis
plantar interossei
dorsal interossei

45
Q

what muscles are innervated by the medial plantar nerve (4)

A

abductor hallucis
flexor digitorum brevis
lumbricals digit 1
flexor hallucis brevis

46
Q

what muscles of foot are innervated by the deep peroneal nerve

A

extensor digitorum brevis
extensor hallucis brevis

MSA II (20 decks)

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