Toe extensors Flashcards

1
Q

name the toe Extensors

A

Extensor Hallucis Longus, Extensor Digitorum Longus & Brevis, Lumbricals, Interossei.

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2
Q

Extensor hallucis brevis origin

A

Calcaneus and
inferior extensor retinaculum

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3
Q

Extensor hallucis brevis insertion

A

Base of the proximal phalanx of the great toe

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4
Q

Extensor hallucis brevis nerve supply

A

Deep fibular nerve

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5
Q

Extensor hallucis brevis action

A

Extension of 1st toe

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6
Q

Extensor hallucis brevis function

A

Running

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7
Q

Extensor digitorum brevis origin

A

Calcaneus and
inferior extensor retinaculum

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8
Q

Extensor digitorum brevis insertion

A

Long extensor tendons of toes 2-4

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9
Q

Extensor digitorum brevis nerve supply

A

Deep fibular nerve

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10
Q

Extensor digitorum brevis action

A

Extension of the toes 2-5

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11
Q

Extensor digitorum brevis function

A

Running

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12
Q

Lumbricals origin

A

Tendon of the flexor digitorum longus

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13
Q

Lumbricals insertion

A

Medial proximal phalanx and dorsal expansion of the extensor digitorum longus

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14
Q

Lumbricals nerve supply

A

Lumbrical 1: Medial plantar nerve (S2, S3)

Lumbricals 2-4: Lateral plantar nerve (S2-S3)

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15
Q

Lumbricals action

A

Flexion at the metatarsophalangeal joints and extension at the interphalangeal joints

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16
Q

Lumbricals function

A

running

17
Q

Plantar and dorsal interossei origins

A

Plantar: medial side of metatarsals 3-5
Dorsal: lateral aspect of the metatarsals

18
Q

Plantar and dorsal interossei insertions

A

Plantar: medial sides of the phalanges of digits 3-5
Dorsal: medial side of the proximal phalanx of the second digit and lateral sides of the proximal phalanxes of digits 2-4

19
Q

Plantar and dorsal interossei nerve supply

A

Lateral plantar nerve

20
Q

Plantar and dorsal interossei actions

A

Plantar: Adduction of the lateral three digits and flexion at the metatarsophalangeal joints
Dorsal: Abduction of the lateral four digits and flexion at the metatarsophalangeal joints

21
Q

Plantar and dorsal interossei functions

A

walking

22
Q

Extensor digitorum longus origin

A

(Proximal half of) medial surface of fibula, lateral tibial condyle, interosseus membrane

23
Q

Extensor digitorum longus insertion

A

Distal and middle phalanges of digits 2-5

24
Q

Extensor digitorum longus nerve supply

A

Deep fibular nerve (L5, S1)

25
Q

Extensor digitorum longus action

A

Metatarsophalangeal and interphalangeal joints 2-5: Toe extension;
Talocrural joint: Foot dorsiflexion;
Subtalar joint: Foot eversion

26
Q

Extensor digitorum longus function

A

walking