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Control and movement term 2 > leg > Flashcards

leg Flashcards

1
Q

What is the nervous supply of the anterior compartment of the leg?

A

deep fibular nerve (L4-S1) branch of common fibular

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2
Q

What is the blood supply of the anterior compartment of the leg?

A

anterior tibial artery, terminal branch of popliteal artery

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3
Q

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

A

tibialis anterior
Extensor hallucis longus
Extensor digitorum longus
Fibularis tertius

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4
Q

What are the attachments of tibialis anterior?

A

Lateral condyle and superior half of lateral surface of tibia/ interosseous membrane.
Medial/ inferior surfaces of cuneiform and base of 1st metatarsal

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5
Q

What are the actions of tibularis anterior?

A

dorsiflexion of ankle, inversion of foot, supports medial longitudinal arch of foot

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6
Q

What are the attachments of extensor hallucis longus?

A

middle part of ant surface of fibula and interosseous membrane.
Dorsal aspect of base of distal phalanx of great toe

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7
Q

What are the actions of extensor hallucis longus?

A

extends hallux (great toe), dorsiflexion of ankle

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8
Q

What are the attachments of extensor digitorum longus?

A

lateral condyle of tibia and sup 3/4 of anterior surface of interosseous membrane.
Middle and distal phalanges of lateral 4 digits

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9
Q

What are the actions of extensor digitorum longus?

A

dorsiflexion of ankle, extension of lateral 4 digits

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10
Q

What are the attachments of fibularis tertius?

A

inf third of ant surface of fibula and interosseous membrane.
Dorsum of base of 5th metatarsal

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11
Q

What are the actions of fibularis tertius?

A

dorsiflexion of ankle, aids in eversion of foot

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12
Q

what is the nerve supply to the lateral compartment of the leg?

A

superficial fibular nerve, L5-S2, a terminating branch of common fibular

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13
Q

What is the blood supply to the lateral compartment of the leg?

A

proximally perforating branches of the anterior tibial artery, distally by perforating arteries of the fibular artery

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14
Q

What are the 2 muscles in the lateral compartment?

A

Fibularis longus and brevis, tendons run posterior to lateral malleolus

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15
Q

What are the attachments of Fibularis longus?

A

head and sup 2/3 of lateral fibula.

Base of 1st metatarsal and medial cuniform

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16
Q

What are the actions of the muscles in the lateral compartment of the leg?

A

eversion of foot, weak plantarflexion at ankle. FL supports transverse arch of the foot

17
Q

What are the attachments of Fibularis brevis?

A

inf third of ant surface of fibula and interosseous membrane.
Dorsal surface of tuberosity of base of 5th metatarsal

18
Q

What is the consequence of damage to common fibular nerve (most common at neck of fibula)?

A

unopposed inversion of foot due to damage to lat and anterior compartments leading to foot drop

19
Q

What are the superficial muscles of the posterior compartment of the leg?

A

gastrocnemius, soleus and plantaris.

20
Q

What are the attachments of gastrocnemius?

A

later head: lateral aspect of lateral condyle of femur, medial head: popliteal surface of femur superior to medial condyle.
calcaneal tendon to calcaneus

21
Q

What are the actions of gastrocnemius?

A

plantarflexion of ankle especially when knee extended, flexes leg at knee

22
Q

What are the attachments of soleus?

A

post surface of head and superior 1/4 of fibula, medial border of tibia.
calcaneal tendon to calcaneus

23
Q

What are the actions of soleus?

A

plantarflexion of foot,

steadies leg on foot

24
Q

What are the actions of plantaris?

A

weakly assists in plantarflexion of foot

25
Q

What are the attachments of plantaris?

A

inferior end of lat supracondylar line of femur.

calcaneal tendon to calcaneus

26
Q

What is the nerve supply of the muscles in the superficial posterior compartment?

A

tibial nerve, (S1-2)

27
Q

What is the blood supply to the muscles of the posterior compartment of the leg?

A

posterior tibial artery (branch of popliteal)

28
Q

What are the 4 muscles in the deep group of the posterior compartment of the leg?

A

popliteus, flexor digitorum longus, flexor hallucis longus, tibialis posterior

29
Q

what are the attachments of popliteus?

A

lateral surface of lateral condyle of femur and lateral meniscus.
Posterior surface of tibia superior to soleal line.

30
Q

What are the actions of popliteus?

A

weak flexion of knee. unlocks knee.

31
Q

What is the nerve supply to popliteus?

A

tibial nerve, L4-S1

32
Q

what are the attachments of flexor hallucis longus?

A

inferior 2/3 of posterior surface of fibula and interosseous membrane.
Base of distal phalanx of great toe

33
Q

What are the actions of flexor hallucis longus?

A

flexion of great toe, weak plantarflexion of ankle, supports medial longitudinal arch of foot

34
Q

what are the attachments of flexor digitorum longus?

A

medial part of posterior surface of tibia inferior to soleal line, fibia via broad tendon.
Bases of distal phalanges of lateral 4 digits

35
Q

What are the actions of flexor digitorum longus?

A

flexion of lateral 4 digits, plantarflexion at ankle, supports longitudinal arches of foot.

36
Q

What is the nerve supply of flexor hallucis longus and flexor digitorum longus?

A

Tibial nerve S2,3

37
Q

What are the attachments of tibialis posterior?

A

interosseous membrane, posterior surface of tibia inferior to soleal line and posterior surface of fibula.
Tuberosity of navicular, cuneiform, cuboid, bases of metatarsal 2-4

38
Q

What are the actions of tibialis posterior?

A

plantarflex ankle,
invert foot,
support medial longitudinal arch of foot

39
Q

What is the nerve supply to tibialis posterior?

A

Tibial nerve, L4-5

Control and movement term 2 (14 decks)

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