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Anatomy Second Semester > Anterior And Lateral Leg And Dorsum Of The Foot > Flashcards

Anterior And Lateral Leg And Dorsum Of The Foot Flashcards

1
Q

What are the compartments of the leg

A

Anterior, lateral and posterior

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2
Q

What does the interosseous membrane provide

A

A surface for muscle attachment

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3
Q

What direction do the fibres of the interosseous membrane pass

A

Inferolaterally from the tibia to fibula

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4
Q

What does the interosseous membrane help resist

A

The downwards pull of the muscles attached to the fibula

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5
Q

What type of joint is the superior tibiofibular

A

Plane synovial joint

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6
Q

What does the superior tibiofibular joint involve

A

The head of the fibula and the facet on the lateral tibial condyle

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7
Q

What causes movement of the superior tibiofibular joint

A

Dorsiflexion of the ankle

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8
Q

What is the function of the muscles of the lateral compartment

A

Evertors of the foot

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9
Q

Where do the tendons of the muscles of the lateral compartment run in relation to the lateral malleolus

A

They run posteriorly to it

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10
Q

What are the muscles of the lateral compartment

A

Peroneus longus and peroneus brevis

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11
Q

Attachment of peroneus longus

A

The head and upper 2/3rds of the lateral fibula

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12
Q

Insertion of peroneus longus

A

The base of the 1st metatarsal and medial cuniform

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13
Q

Innervation of peroneus longus

A

The superficial peroneal nerve (L5-S2)

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14
Q

Attachment of peroneus brevis

A

The inferior 2/3rds of the lateral fibula

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15
Q

Insertion of peroneus brevis

A

The lateral side of the base of the 5th metatrsal

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16
Q

Innervation of peroneus brevis

A

The superfical peroneal nerve (L5-S2)

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17
Q

What does the peroneus longus tendon run below

A

The peroneal trochlea of the calcaneus

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18
Q

What does the peroneus brevis tendon run above

A

The peroneal trochlea of the calcaneus

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19
Q

What is the function of the muscles of the anterior compartment

A

Extension of the ankle joint and digits

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20
Q

Where do the tendons of the anterior compartment muscles run

A

Anterior to the ankle joint

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21
Q

What is ankle flexion

A

Dorsiflexion

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22
Q

What are the muscles of the anterior compartment

A

Tibialis anterior, extensor digitorum longus, peroneus tertius and extensor hallucis longus

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23
Q

What innervates the muscles of the anterior compartment

A

The deep peroneal nerve (L4, L5)

24
Q

Attachment of tibialis anterior

A

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

25
Q

Insertion of tibialis anterior

A

Medial and inferior surface of the medial cuniform and the base of the 1st metatarsal

26
Q

Function of tibialis anterior

A

Dorsiflexion of the ankle and inverts the foot

27
Q

Attachment of extensor digitorum longus

A

The lateral condyle of the tibia, superior 3/4th of the medial surface of the fibula and the interosseous membrane

28
Q

Insertion of extensor digitorum longus

A

Middle and distal phalanges of the lateral 4 digits

29
Q

Function of extensor digitorum longus

A

Dorsiflexes the ankle and extends the lateral 4 digits

30
Q

Attachment of extensor hallucis longus

A

Middle anterior surface of the fibula and interosseus membrane

31
Q

Insertion of extensor hallucis longus

A

Dorsal aspect of the distal phalanx of hallux

32
Q

Function of extensor hallucis longus

A

Extends the hallux and dorsiflexes the ankle

33
Q

Attachment of peroneus tertius

A

Inferior 1/3rd of the anterior fibula and insterosseus membrane

34
Q

Insertion of peroneus tertius

A

Dorsum of the base of the 5th metatarsal

35
Q

Function of peroneus tertius

A

Dorsiflexes the ankle and assists in eversion of the foot

36
Q

Portions of the flexor retinaculum

A

Superior and inferior

37
Q

Where does the superior portion of the flexor retinaculum run from/to

A

The anterior border of the tibia to the lower end of the fibula

38
Q

Where does the inferior portion of the flexor retinaculum run from/to

A

Stem - calcaneus laterally (from)
Upper limb - medial malleolus (to)
Lower limb - passes around the medial border of the foot to blend with the fascia over abductor hallucis (to)

39
Q

What is the common origin of the muscles of the dorsum of the foot

A

Superior surface of calcaneus and the inferior flexor retinaculum

40
Q

What are the muscles of the dorsum of the foot

A

Extensor hallucis brevis and extensor digitorum brevis

41
Q

Insertion of extensor hallucis brevis

A

The base of the proximal hallux

42
Q

Insertion of extensor digitorum brevis

A

Long extensor tendon of the 2nd-4th digits

43
Q

Innervation of the muscles of the dorsum of the foot

A

The deep peroneal nerve (L5, S1)

44
Q

what does the superficial peroneal nerve branch from

A

Common peroneal

45
Q

Where does the superficial peroneal nerve run

A

Between peroneus longus

46
Q

What does the superficial peroneal nerve supply

A

The lateral compartment leg muscles, cuatneous innervation to the distal anterior suface of the leg and most of the dorsum of the foot

47
Q

What does the deep peroneal nerve branch from

A

The common peroneal

48
Q

Where does the deep peroneal run

A

Between peroneus longus and the neck of the fibula

49
Q

What does the deep peroneal nerve supply

A

All anterior compartment muscles, muscles of the dorsum of the foot and cutaneous innervation to the skin between digits 1 and 2

50
Q

What provides cuatneous innervation to the lateral leg

A

The sural nerve

51
Q

What provides cuatneous innervation to the anterior leg

A

The saphenous nerve

52
Q

Branches of the popliteal artery

A

Anterior and posterior tibial arteries

53
Q

What does the posterior tibial artery give rise to

A

The fibular artery

54
Q

What artery passes through the interosseous membrane and descends on it

A

The anterior tibial artery

55
Q

What is dorsalis pedis

A

A continuation of the anterior tibial artery

56
Q

Branches of dorsalis pedis

A

Lateral tarsal, deep plantar and arcuate arteries

57
Q

What does the arcuate artery anastamose with

A

The lateral tarsal artery

Anatomy Second Semester (27 decks)

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