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Musculoskeletal Anatomy > OIA on Feet > Flashcards

OIA on Feet Flashcards

1
Q

extensor hallucis brevis origin

A

dorsal surface of calcaneus

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2
Q

extensor hallucis brevis insertion

A

base of proximal phalanx of hallux (dorsal surface)

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3
Q

extensor hallucis brevis action

A

extension of hallux

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4
Q

extensor hallucis brevis innervation

A

deep fibular

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5
Q

extensor digitorum brevis origin

A

dorsal surface of anterolateral calcaneus

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6
Q

extensor digitorum brevis insertion

A

base of middle phalanx of digits 2-4 (on lateral side of extensor digitorum longus tendons)

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7
Q

extensor digitorum brevis action

A

extension of digits 2-4

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8
Q

extensor digitorum brevis innervation

A

deep fibular (peroneal)

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9
Q

abductor hallucis origin

A
  1. medial process of calcaneal tuberosity

2. plantar aponeurosis

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10
Q

abductor hallucis insertion

A

base of proximal phalanx of hallux (medial side)

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11
Q

abductor hallucis action

A

flexion and abduction of hallux

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12
Q

abductor hallucis innervation

A

medial plantar

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13
Q

flexor digitorum brevis origin

A
  1. medial process of calcaneal tuberosity (anterior aspect)

2. plantar aponeurosis

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14
Q

flexor digitorum brevis insertion

A

splits to attach on both sides of the middle phalanx of digits 2-5

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15
Q

flexor digitorum brevis action

A

flexion of digits 2-5

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16
Q

flexor digitorum brevis innervation

A

medial plantar

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17
Q

abductor digiti minimi origin

A

lateral process of calcaneal tuberosity

plantar aponeurosis

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18
Q

abductor digiti minimi insertion

A

base of proximal phalanx of 5th digit (lateral side)

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19
Q

abductor digit minimi action

A

abudction of 5th digit

assists in flexion of 5th digit at MTP joint

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20
Q

abductor digiti minimi innervation

A

lateral plantar

21
Q

quadratus plantae origin

A

medial head: medial calcaneal tuberosity (plantar side)

lateral head: lateral calcaneal tuberosity (plantar side)

22
Q

quadratus plantae insertion

A

tendon of flexor digitorum longus (lateral border)

23
Q

quadratus plantae action

A

assists in flexion of digits 2-5 by offsetting the oblique pull of the flexor digitorum longus

24
Q

quadratus plantae innervation

A

lateral plantar

25
Q

lumbricals origin

A

tendons of flexor digitorum longus (medial borders)

26
Q

lumbricals insertion

A

proximal phalanges and extensor tendons of digits 2-5 (medial sides)

27
Q

lumbricals (1-4) action

A

flexion of MTP joints and extension of IP joints (via extensor hood mechanism) of digits 2-5

28
Q

lumbricals (1-4) innervation

A

1st: medial plantar

2-4: lateral plantar

29
Q

flexor hallucis brevis origin

A

cuboid and lateral cuneiforms (plantar surfaces)

30
Q

flexor hallucis brevis insertion

A

base of proximal phalanx of hallux

31
Q

flexor hallucis brevis action

A

flexion of hallux

32
Q

flexor hallucis brevis innervation

A

medial plantar

33
Q

adductor hallucis origin

A

oblique head: bases of metatarsals 2-4

transverse head: plantar ligaments at MTP joints 3-5 and transverse metatarsal ligament

34
Q

adductor hallucis insertion

A

base of proximal phalanx of hallux (lateral aspect)

35
Q

adductor hallucis action

A
  1. adduction of hallux

2. assists in flexion of hallux

36
Q

adductor hallucis innervaiton

A

lateral plantar

37
Q

flexor digiti minimi (brevis) origin

A

base of 5th metatarsal

38
Q

flexor digiti minimi (brevis) insertion

A

base of proximal phalanx of 5th digit (lateral aspect)

39
Q

flexor digiti minimi (brevis) action

A

flexion of proximal phalanx of 5th digit

40
Q

flexor digiti minimi brevis innervation

A

lateral plantar

41
Q

dorsal interossei(1-4) origin

A

from both metatarsals from between which they lie

42
Q

dorsal interossei insertion

A
  1. proximal phalanx of digit 2 medially
  2. proximal phalanx of digit 2 laterally
  3. proximal phalanx of digit 3 laterally
  4. proximal phalanx of digit 4 laterally
43
Q

dorsal interossei (1-4) action

A
  1. abduction of digits 2-4

2. flexion of MTP and extension of IP joints via extensor hood mechanism

44
Q

dorsal interossei innervation

A

lateral plantar

45
Q

plantar interossei origin

A

3-5 metatarsals (medial borders)

46
Q

plantar interossei (1-3) insertion

A

base of proximal phalanx of the same digit (medial aspect)

47
Q

plantar interossei (1-3) action

A
  1. adduction of digits 3-5

2. flexion of MTP and extension of IP joints via extensor hood mechanism

48
Q

plantar interossei (1-3) innervation

A

lateral plantar

Musculoskeletal Anatomy (7 decks)

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