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Anatomy 2 > Anterior & Lateral Leg and Foot > Flashcards

Anterior & Lateral Leg and Foot Flashcards

1
Q

What is the function of the Interosseous membrane?

A

Provides a surface for muscle attachment and helps resist the downward pull of muscles attached to the fibula

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2
Q

What direction does the Interosseous membrane pass?

A

Inferolaterally from Tibia to Fibula

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3
Q

What type of joint is the superior tibiofibular joint?

A

Plane synovial joint

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4
Q

What is the orientation of the superior tibiofibular joint?

A

Head of fibula & facet on lateral tibial condyle

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5
Q

Does the superior tibiofibular joint give movement?

A

Slight movement during dorsiflexion of ankle

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6
Q

What is the deep fascia of the leg called?

A

Crural fascia

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7
Q

What does the anterior compartment of the leg consist of?

A

4 muscles

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8
Q

What kind of muscles are involved in the anterior compartment?

A

Extensors of ankle joint and digits

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9
Q

Tendons are what to the ankle joint?

A

Anterior

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10
Q

What is the function the muscles in the anterior compartment?

A

Ankle extension = dorsiflexion

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11
Q

What does the lateral compartment of the leg consist of?

A

2 muscles

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12
Q

What kind of muscles are involved in the lateral compartment of the leg?

A

Evertors of the foot

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13
Q

Are the tendons posterior or anterior to the lateral malleolus?

A

Posterior

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14
Q

What is the proximal attachment of the peroneus longus muscle?

A

Head of upper 2/3rd of lateral fibula

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15
Q

What is the distal attachment of the peroneus longus muscle?

A

Base of 1st Metatarsal and medial cuneiform

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16
Q

What innervates the peroneus longus?

A

Superficial Peroneal Nerve (L5, S1 and S2)

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17
Q

What are the 2 muscles called in the lateral compartment?

A

Peroneus Longus and Peroneus Brevis

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18
Q

What is the proximal attachment of the Peroneus Brevis?

A

Inferior 2/3rd of lateral fibula

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19
Q

What is the distal attachment of the Peroneus Brevis?

A

Tuberosity on lateral side of base of 5th metatarsal

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20
Q

What innervates the Peroneus Brevis?

A

Superficial peroneal nerve (L5, S1 and S2)

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21
Q

What are the 4 muscles of the anterior compartment of the leg?

A

Tibialis anterior, Extensor digitorum longus, Peroneus tertius and Extensor hallucis longus

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22
Q

What innervates the 4 muscles in the anterior compartment of the leg?

A

Deep perineal nerve (L4 and L5)

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23
Q

What is the proximal attachment of the Tibialis Anterior?

A

Lateral condyle of tibia, Superior 1/2 of lateral tibial surface and interosseous membrane

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24
Q

What is the distal attachment of the Tibialis Anterior?

A

Medial and infeiror surfaces of medial cuneiform and base of 1st metatarsal

25
Q

What is the function of the Tibialis Anterior?

A

Dorsiflexes ankle; inverts foot

26
Q

What is the proximal attachment of the extensor digitorum longus?

A

Lateral condyle tibial, superior 3/4th of medial surface Fibula and Interosseous membrane

27
Q

What is the distal attachment of the extensor digitorum longus?

A

Middle and distal Phalanges of lateral 4 digits

28
Q

What is the function of the extensor digitorum longus?

A

Extends lateral 4 digits; dorsiflexes ankle

29
Q

What is the proximal attachment of the Peroneus Tertius?

A

Inferior 1/3rd anterior fibula and interosseous membrane

30
Q

What is the distal attachment of the Peroneus Tertius?

A

Dorsum of base of 5th metatarsal

31
Q

What is the function of the Peroneus Tertius?

A

Dorsiflexes ankle; Assists in eversion of foot

32
Q

What is the proximal attachment of the Extensor Hallucis Longus?

A

Middle anterior surface of Fibula and Interosseous membrane

33
Q

What is the distal attachment of the Extensor Hallucis Longus?

A

Dorsal aspect of distal Phalanx of Hallux

34
Q

What is the function of the Extensor Hallucis Longus?

A

Extends Hallux; Dorsiflexes ankle

35
Q

The Extensor Retinacula is split into?

A

Superior extensor retinacula and inferior extensor retinaculum

36
Q

What is the proximal attachment of the superior extensor retinacula?

A

Anterior border of tibia

37
Q

What is the distal attachment of the superior extensor Retinaculum?

A

Lower end of Fibula

38
Q

What is the proximal attachment of the inferior Extensor Retinaculum?

A

Stem attached to Calcaneus laterally

39
Q

What is the distal attachment of the Extensor Retinacula?

A

Upper limb attached to Medial Malleolus

Lower limb passes round medial border of foot to blend with dense fascia over abductor hallucis

40
Q

What are the muscles of Dorsum of Foot?

A

Extensor Hallucis Brevis and Extensor Digitorum Brevis

41
Q

Proximal attachment of both muscles of dorsal of foot?

A

Superior surface of Calcaneus and inferior extensor retinaculum

42
Q

What is the distal attachment of the Extensor Hallucis Brevis?

A

Base fo Proximal Phalanx of Hallux

43
Q

What is the distal attachment of the Extensor Digitorum Brevis?

A

Long extensor tendons of toes 2-4

44
Q

What innervates the muscles of dorsal of foot?

A

Deep perineal nerve (L5 - S1)

45
Q

The superficial peroneal nerve is a branch of what?

A

The common perineal between peroneus longus and neck of fibula

46
Q

What does the lateral compartment of the leg supply?

A

Muscles and continuing as cutaneous nerve

47
Q

What is the direction of Cutaneous innervation?

A

Distal anterior surface of leg and most of dorsal of foot

48
Q

The deep peroneal nerve is a branch of?

A

Common peroneal between peroneus longus and neck of fibula

49
Q

Where does the deep peroneal nerve pass through?

A

Extensor digitorum longus and travels with anterior tibial artery supplying all anterior compartment

50
Q

Where does the deep peroneal nerve cross?

A

The ankle joint to supply extensor digitorum braves and extensor hallucis brevis

51
Q

Where is cutaneous innervation to skin?

A

Between digits 1 and 2

52
Q

What does the popliteal artery give?

A

Anterior and posterior tibial arteries

53
Q

Where does the anterior tibial artery go through?

A

Interosseous membrane and descend on this

54
Q

What does the poster tibial artery do?

A

Gives the fibular artery that provides perforating branches to lateral compartment

55
Q

What are the arteries of the leg?

A

Popliteal artery, anterior and posterior tibial arteries

56
Q

What are the arteries of the dorsal of foot?

A

Dorsalis pedis artery

57
Q

What is the dorsals pedis artery a continuation of?

A

Anterior tibial artery, Metatarsal and digital arteries

58
Q

What are the branches of the Dorsalis pedis artery?

A

Lateral tarsal artery, Depp plantar artery and Arcuate artery

59
Q

Where does the arcuate artery run across?

A

Metatarsals to anastomose with lateral tarsal artery

Anatomy 2 (26 decks)

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