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Anatomy Written 4 > The Foot - Plantar > Flashcards

The Foot - Plantar Flashcards

1
Q

Cutaneous Innervation of plantar surface

A 
Saphenous
Lateral dorsal cutaneous
Calcaneal branches
Medial plantar
Lateral plantar
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2
Q

Calcaneal branches supply

A

heel area

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3
Q

Medial plantar suplies

A

medial 3 1/2 digits

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4
Q

Lateral plantar supplies

A

lateral 1 1/2 digits

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5
Q

Deep Fascia

A

Thicker than dorsal side

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6
Q

Thickening of plantar fascia

A

Flexor retinaculum

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7
Q

Plantar aponeurosis - deep fascia

A

Central part of deep fascia
Very thick and strong - prevents injury and supports arches of foot
Longitudinally arranged fibers
Goes from calcaneus to toes

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8
Q

Plantar aponeurosis divides into

A

five slips - one for each toe that attaches to fibrous digital sheaths

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9
Q

Vertical septa from plantar aponeurosis

A

divide foor into 3 compartments

Medial, lateral, central

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10
Q

Muscles

A

4 layers of muscles

Help maintain balance and support arches of foot

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11
Q

First layer

A

3 muscles
Abductor hallucis
Flexor digitorum brevis
Abductor digiti minimi

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12
Q

Abductor hallucis

A

First

Tuberosity of calcaneous - base of 1st proximal phalanx

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13
Q

Flexor digitorum brevis

A

First

Tuberosity of calcaneous - middle phalanx of lateral 4 toes

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14
Q

Abductor digiti minimi

A

First

Tuberosity of calcaneous - base of 5th proximal phalanx

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15
Q

Second layer

A 
Flexor digitorum longus tendons
Flexor hallucis longus tendon
Quadratus plantae
Lumbrical muscles (4)
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16
Q

Quadratus plantae

A

Second

Calc - Tendon of FDL

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17
Q

Lumbricals

A

Second

Tendon of FDL - flexor sheath of lateral 4 toes

18
Q

Third Layer

A

Flexor digiti minimi brevis
Adductor hallucis - oblique and transverse heads
Flexor hallucis brevis

19
Q

Flexor digiti minimi brevis

A

Third

Base of 5th metatarsl - 5th proximal phalanx

20
Q

Adductor hallucis - oblique head

A

Third

Base of met 2-4 – base 1st prox phalanx

21
Q

Adductor hallucis - transverse head

A

MP joint ligaments - base 1st proximal phalanx

THird

22
Q

Flexor hallucis brevis

A

cuboid - base 1st proximal phalanx

Third

23
Q

Fourth layer

A

Peroneus longus tendon
Tibialis post tendon
Plantar interossei muscles (3)
Dorsal interossei muscles (4)

24
Q

Plantar interossei muscles

A

Base metatarsals 3-5 –> base proximal phalanx of toes 3-5

Fourth

25
Q

Dorsal interossei muscles

A

Adjacent sides 1-5 metatarsals –> proximal phalanx of 2-4 toes

26
Q

Nerves

A

Tibial
Sural
Saphenous

27
Q

Tibial gives what branches

A

Medial calcaneal
Medial plantar nerve
Lateral plantar nerve

28
Q

Medial calcaneal

A

supplies sensory innervation to heel

branch of tibial

29
Q

Medial plantar nerve

A
  1. Larger than lateral
  2. btw 1st and 2nd layer
  3. passes deep to abductor hallucis brevis
  4. Divides into 3 common plantar digital nerves
    - each of those gives rise to two proper plantar digital nerves
30
Q

Medial plantar nerve supplies

A 
cutaneous branch to 3 1/2 digits
motor to --> abductor hallucis
FDB
FHB
1st lumbrical
31
Q

Lateral Plantar nerve

A

Passes deep to abductor hallucis
Provides cutaneous branches to lateral 1 1/2 digits
Provides 1 common plantar digital nerve
Provides moto branches to rest of intrinsic muscles

32
Q

Sural Nerve

A

Sensory to lateral margin of foot and lateral side of 5th toe

33
Q

Saphenous Nerve

A

branch of femoral nerve

sensory to medial side of phoot

34
Q

Arteries of sole of foot are from

A

Posterior tibial

  • medial and lateral plantar arteries
  • supply plantar muscles
  • Anastomose with arteries of dorsum of foot
35
Q

Medial Plantar Artery

A

smaller than lateral
passes btw abductor hallucis and FDB
Supplies medial side of great tow (first proper plantar digital artery)

36
Q

Lateral Plantar Artery

A

Runs obliquely across foot to lateral side
At base of 5th metatarsal it passes medial side
On medial side it joins deep plantar branch of dorsalis pedis to complete plantar arch

37
Q

Deep plantar artery procides

A

four plantar metatarsal arteries

38
Q

Each plantar metatarsal artery divides into

A

2 proper plantar digital arteries that supply adjacent sides of each toe

39
Q

The first proper plantar digital artery usally originates either from

A

first metatarsal or from medial plantar artery

40
Q

WHat is usually terminal branch of lateral plantar artery

A

10th proper plantar digital

Anatomy Written 4 (9 decks)

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