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Lower Extremity Anatomy > 6) Dorsum of the Foot > Flashcards

6) Dorsum of the Foot Flashcards

1
Q

Origin of Extensor Digitorum Brevis

A

Sinus Trasi
Superolateral calcaneus
Interosseus talocalcanea ligament
Cruciate crural ligament

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2
Q

Insertion of Extensor Digitorum Brevis

A

Lateral aspect of EDL tendons (2-4)

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3
Q

Innervation to Extensor Digitorum Brevis

A

Lateral terminal branch of deep fibular

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4
Q

Blood supply to Extensor Digitorum Brevis

A

Lateral tarsal artery

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5
Q

Function of Extensor Digitorum brevis

A

Dorsiflexion of toes 2-4

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6
Q

Origin of Extensor Hallucis Brevis

A

Sinus Trasi
Superolateral calcaneus
Interosseus talocalcanea ligament
Cruciate crural ligame

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7
Q

Insertion of Extensor Hallucis Brevis

A

Dorsal aspect of proximal phalnx of hallux

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8
Q

Innervation to Extensor Hallucis Brevis

A

Lateral terminal branch of deep fibular

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9
Q

Blood supply to Extensor Hallucis Brevis

A

Lateral tarsal artery

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10
Q

Function of Extensor Hallucis Brevis

A

Dorsiflexion of Hallux

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11
Q

Dorsalis pedis is a continuation of what artery?

A

Anterior tibial artery

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12
Q

Dorsalis pedis can arise from what artery?

A

Perforating fibular artery

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13
Q

Dorsalis pedis is located between

A

Tendons of EHL and EDL

lateral to EHL

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14
Q

Dorsalis pedis is located deep tp

A

Muscles/tendons

Cruciate crural ligament (inf to ext retinaculum)

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15
Q

Branches of Dorsalis pedis

A 
Lateral tarsal
Medial tarsal
Arcuate
1st dorsal metatarsal
Deep plantar
Artery of sinus tarsi
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16
Q

Lateral tarsal artery is deep to/supplies

A

EDB and EHB

bones/joints/ligaments it passes by

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17
Q

Lateral tarsal artery anastomoses with

A

Lateral malleolar plexus
Perforating fibular
Arcuate
Lateral plantar

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18
Q

Medial tarsal artery supplies/anastomoses with

A

Bones/joints/ligs it passes by
Medial malleolar network
Medial plantar artery

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19
Q

Arcuate artery path

A

Passes laterally across met bases

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20
Q

Arcuate artery gives off how many branches?

A

2 to 4 metatarsal arteries

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21
Q

What artery takes over if Arcuate artery is absent?

A

Lateral tarsal artery can take over the area

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22
Q

What are the two terminal branches of Dorsalis pedis?

A

1st dorsal metatarsal

Deep plantar

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23
Q

1st dorsal metatarsal

A

Terminal branch

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24
Q

Deep plantar artery path

A

Passes through proximal end of intermetatarsal space

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25
Q

Deep plantar artery anastomoses with

A

Lateral plantar artery

on plantar side of foot

26
Q

Artery of the sinus tarsi arises as a product of

A

Anastomotic connection with lateral tarsal and perforating fibular artery

27
Q

Dorsal metatarsal arteries branches are on paper cause it’s too hard for here

A

fuuuuuuuuuuuuc

28
Q

How many Dorsal metatarsal arteries are there?

A 
1st dorsal metatarsal
2nd
3rd
4th
Proper dorsal digital artery of 5th digit
29
Q

Dorsal metatarsal arteries are found in

A

the intermetatarsal space on top of dorsal interossei

30
Q

Common fibular nerve root level

A

L4-S2

31
Q

Common fibular nerve path

A

From sciatic
Around fibular neck
Enters lateral compartment through POSTERIOR IM septa

32
Q

Common fibular nerve bifurcates into what two terminal branches?

A

Deep fibular nerve

Superficial fibular nerve

33
Q

Lateral terminal branch of deep fibular nerve provides innervation to?

A

EHB
EDB
Joints of lateral foot

34
Q

Medial terminal branch of deep fibular nerve communicates with?

A

Superficial fibular nerve

communicating branch of superficial fibular nerve

35
Q

Medial Terminal branch of deep fibular nerve follows what two arteries?

A

Dorsalis pedis

1st dorsal metatarsal artery

36
Q

Medial terminal branch of deep fibular nerve provides innervation to?

A

1st dorsal interossei muscle

Joints of medial foot

37
Q

What are the two branches off medial terminal branch of deep fibular nerve?

A

Proper dorsal digital nerve 2

Proper dorsal digital nerve 3

38
Q

Proper dorsal digital nerve 2 provides

A

Cutaneous innervation to dorsolateral Hallux

39
Q

Proper dorsal digital nerve 3 provides

A

Cutaneous innervation to dorsomedial 2nd toe

40
Q

Two pathologies associated with injury Deep fibular nerve?

A 
Footdrop
Weak toe extension
Weak ankle dorsiflexion
Steppage gait
Altered sensation to 1st web space
41
Q

Footdrop is characterized by

A

Increased tripping with gait

42
Q

Steppage gait is characterized by

A

Raising leg to compensate for dragging foot????

43
Q

Superficial fibular nerve root level

A

L4-S1

44
Q

Superficial fibular nerve path

A

Arises from common fibular in the lateral compartment

Descends between fibularis muscles

45
Q

Superficial fibular nerve pierces

A

Anterolateral crural facia in distal 1/3 of leg

46
Q

Superficial fibular nerve provides innervation to what AFTER piercing through crural fascia?

A

Cutaneous innervation to distal anterolateral leg. dorsum of the foot

47
Q

What are the two branches of superficial fibular nerve?

A

Medial dorsal cutaneous

Intermediate dorsal cutaneous

48
Q

Media dorsal cutaneous nerve supplies

A

Cutaneous to medial hallux and adjacent 2nd/3rd digit

49
Q

Medial dorsal cutaneous branches into

A

3 digital branches

50
Q

Intermediate dorsal cutaneous supplies

A

Cutaneous to adjacent 3rd /4th and 4th/5th digits

Lateral ankle

51
Q

Intermediate dorsal cutaneous branches into

A

4 digital branches

52
Q

True/False: The lateral side of the 5th digit is innervated by Intermediate dorsal cutaneous

A

F A L S E

53
Q

Injury to superficial fibular nerve results in

A

Loss of eversion

Altered sensation on dorsum of foot

54
Q

Dorsal digital nerve branches are on paper cause it’s too hard for here

A

also fuuuuuuuuuuuuuuc

55
Q

Medial dorsal cutaneous nerve crosses

A

Ankle centrally

56
Q

Intermediate dorsal cutaneous nerve lies

A

Anterior to lateral malleolus

57
Q

What is the continuation of Sural nerve AFTER the lateral malleolus, and what does it supply?

A

Lateral dorsal cutaneous

Supplies lateral foot border

58
Q

What are the two branches of lateral dorsal cutaneous nerve?

A

10th proper dorsal digital nerve (dorsolateral 5th toe)

Continuation of lateral dorsal cutaneous

59
Q

in the superior leg, Anterior tibial artery and deep fibular nerve lie

A

Between TA and EDL

60
Q

In the inferior leg, Anterior tibial artery and deep fibular nerve lie

A

Between TA and EDL?

61
Q

Distal to the ankle joint, Dorsalis pedis and deep fibular nerve lie

A

Between EHL and EDL

Lower Extremity Anatomy (9 decks)

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