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Foot muscles Flashcards

1
Q

Extensor digitorum brevis origin

A

Superior/lateral aspect of calcaneus

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2
Q

Extensor digitorum brevis insertion

A

Tendons of extensor digitorum longus to digits 2-4 (& usually 5) to mid phalanx

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3
Q

Extensor digitorum brevis action

A

Assist extenstion (dorsiflexion) of toes 2-5 (&5 when attached) at MTP and PIP

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4
Q

Extensor digitorum brevis innervation and spinal level

A

Deep fibular L5-S1

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5
Q

Extensor hallucis brevis origin

A

Anterior/superior surface of calcaneous

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6
Q

Extensor hallucis brevis insertion

A

Base of proximal phalanx of great toe

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7
Q

Extensor hallucis brevis action

A

assist great toe extension

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8
Q

Extensor hallucis brevis innervation and spinal level

A

Deep fibular L5-S1

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9
Q

Abductor hallucis origin

A

Medial tubercle of calcaneous

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10
Q

Abductor hallucis insertion

A

Medial side of base of proximal phalanx of great toe

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11
Q

Abductor hallucis brevis action

A

Abduct and assist flexion of great toe at MTP joint, support longitudinal arch

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12
Q

Abductor hallucis brevis innervation and spinal level

A

Medial plantar nerve S1-2

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13
Q

Flexor digitorum brevis origin

A

Medial tubercle of calcaneous and plantar aponeurosis

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14
Q

Flexor digitorum brevis insertion

A

Middle phalanx of toes 2-5

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15
Q

Flexor digitorum brevis action

A

Flex toes 2-5 at PIP and MTP joints, supperior longitudinal arch

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16
Q

Flexor digitorum brevis innervation and spinal level

A

Medial plantar S1-2

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17
Q

Abductor digit minimi origin

A

Calcaneous (medial tubercle) and plantar aponeurosis

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18
Q

Abductor digiti minimi insertion

A

Lateral side of base of proximal phalanx of little toe, 5th metatarsal

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19
Q

Abductor digiti minimi action

A

Abduct and assist flexion of little toe, supports longitudinal arch

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20
Q

Abductor digiti minimi innervation and spinal level

A

Lateral plantar S1-3

21
Q

Quadratus Plantae origin

A

Medial and lateral margins of plantar surface of calcaneus

22
Q

Quadratus plantae insertion

A

Tendons of flexor digitorum longus

23
Q

Quadratus plantae action

A

Assist flexion of toes 2-5 by adjusting pull angle of FDL

24
Q

Quadratus Plantae innervation and spinal level

A

Lateral plantar S1-3

25
Lumbricals origin
1: FDL tendon to 2nd toe | 2-4: adjacent sides of FDL tendons to digits 2&3, 3&4,4&5
26
Lumbricals insertion
Base of proximal phalanges and extensor expansion of digits 2-5
27
Lumbricals action
Flex at MTP, extend at IP, and adduct 2-5 towards great toe
28
Lumbricals innervation and spinal level
1: medial plantar S2-3 | 2-4: lateral plantar S2-3
29
Flexor hallucis brevis origin
Plantar calcaneocuboid ligament, cuboid and lateral cuneiform
30
Flexor hallucis brevis insertion
Medial and lateral sides of base of proximal phalanx and sesamoids
31
Flexor hallucis brevis action
Flex great toe at MTP, support longitudinal arch
32
Flexor Hallucis Brevis innervation and spinal level
Medial plantar S1-2 | Lateral Plantar S1-2
33
Adductor hallucis brevis origin
Oblique head: base of metatarsals 2-4 | Transverse head: deep transverse metatarsal ligament and capsules of digits 3-5
34
Adductor hallucis brevis insertion
Lateral side of base of proximal phalanx of great toe
35
Adductor hallucis brevis action
Adduct great toe at MTP joint, assist flexion Transverse head: support transverse arch Oblique head: support longitudinal arch
36
Adductor hallucis brevis innervation and spinal level
Lateral plantar S2-3
37
Flexor digiti minimi origin
Base of 5th metatarsal and long plantar ligament
38
Flexor digiti minimi insertion
Lateral side of base of proximal phalanx of little toe
39
Flexor digiti minimi action
Flex little toe at MTP
40
Flexor digiti minimi innervation and spinal level
Lateral S2-3
41
Dorsal interossei origin
Adjacent sides of metatarsal (1&2, 2&3, 3&4, 4&5)
42
Dorsal interossei insertion
1: medial side of proximal phalanx of 2nd toe | 2-4: lateral side of proximal phalanx of toes 2-4, dorsal aponeurosis
43
Dorsal interossei action
Abduct toes 2-4 away from 2nd toe , assist flexion at MTP and IP ext
44
Dorsal interossei innervation and spinal level
Lateral plantar S2-3
45
Plantar Interossei origin
Medial sides of metatarsals 3-5
46
Plantar interossei insertion
Medial sides of bases of proximal phalanx 3-5
47
Plantar interossei action
Adduct toes 3-5 towards 2nd toe, assist flexion at MTP and extend at IP
48
Plantar interossei innervation and spinal level
Lateral plantar S2-3

Anatomy (8 decks)

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