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KN 251 Unit 3 > Anterior and Lateral Leg > Flashcards

Anterior and Lateral Leg Flashcards

1
Q

What does the tibia articulate with?

A

Femur and the Talus

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2
Q

Which of the leg bones is weight bearing?

A

The tibia

Fibula is for muscle attachments

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3
Q

What does the fibula articulate with inferiorly?

A

Talus

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4
Q

Name the 3 compartments of the leg, separated by crural (sp?) fascia

A

Anterior, Lateral, Posterior

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5
Q

The deep fascia in the leg is important in preventing swelling of the leg muscles by promoting venous (blood) return, which helps to form the…

A

Calf pump

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6
Q

The compartment of the leg that is the dorsi flexor/extensor

A

Anterior

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7
Q

What innervates the anterior compartment of the leg?

A

Deep Fibular/Peroneal Nerve

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8
Q

Name the 4 muscles of the anterior compartment of the leg

A

Tibialis Anterior
Extensor Digitorum Longus
Fibularis/Peroneus Tertius
Extensor Hallucis Longus

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9
Q

The muscle that is just lateral to the tibia and has a strong tendon located lateral to the medial malleolous, and is the strongest dorsiflexor and invertor of the foot

A

Tibialis Anterior

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10
Q

Origin and Insertion of the tibialis anterior

A

Origin: Lateral condyle, interosseous membrane

Insertion: Medial cuneiform and 1st metatarsal

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11
Q

Innervation of the tibialis anterior

A

Deep Fibular Nerve, branch of the sciatic nerve

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12
Q

Actions of the tibialis anterior

A

Dorsiflexion and inversion of the foot

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13
Q

The most laterally placed muscle in the anterior compartment of the leg, divides into 4 tendons

A

Extensor Digitorum Longus

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14
Q

Origin and Insertion of the extensor digitorum longus

A

Origin: Lateral condyle of the tibia, Fibula, Interosseous membrane

Insertion: Phalanges of toes 2,3,4,5 via extensor expansion hood

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15
Q

Innervation of the extensor digitorum longus

A

Deep Fibular Nerve

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16
Q

Action of the extensor digitorum longus

A

Extend the toes, dorsiflexion, and eversion of the foot

17
Q

The muscle that is fused with the extensor digitorum longus. Just above the ankle joint a small portion of the muscle gives rise to a tendon which inserts on the dorsum of the foot, not the toes

A

Fibularis Tertius

18
Q

Origin and insertion of the fibularis tertius

A

Origin: Distal part of fibula, interosseeous membrane

Insertion: Dorsum of 5th metatarsal

19
Q

Action of the fibularis tertius

A

Deep fibular Nerve

20
Q

Action of the fibularis tertius

A

Dorsiflexion and eversion

21
Q

The muscle deeply placed between the tibialis anterior and the extensor digitorum longus.

What does hallux mean?

A

Extensor Hallucis Longus

Great Toe

22
Q

Origin and insertion of the extensor hallucis longus

A

Origin: Fibula, Interosseous membrane

Insertion: Distal phalynx of the great toe

23
Q

Innervation of the extensor hallucis longus

A

Deep Fibular Nerve

24
Q

Action of the extensor hallucis longus

A

Extends big toe and helps with dorsiflexion of the foot

25
Q

The thick band of fibers holding the tendons on the anterior side of the ankle

A

Superior and inferior extensor retinacula

26
Q

Edema and pain the the area of the distal 2/3 of the tibia.

Anterior tibialis strain results from micro tears in the periosteum of the tibia, results from injury or athletic overuse of the muscle in the anterior compartment

A

Shin Splints

27
Q

Results from injury to the deep fibular/peroneal nerve, the foot cannot be dorsiflexed

A

Foot Drop from Shin slins

28
Q

What do the muscles of the lateral compartment do?

A

Plantar flexion and eversion

29
Q

What innervates the lateral compartment of the leg?

A

Superficial fibular/peroneal nerve

30
Q

Name the two muscle of the lateral compartment of the leg

A

Fibularis Longus

Fibularis Brevis

31
Q

The superficial lateral compartment muscle

A

Fibularus Longus

32
Q

Origin and insertion of the fibularis longus

A

Origin: Fibula, more superiorly than brevis

Insertion: 1st metatarsal and medial cuneiform

33
Q

Innervation of the fibularis longus

A

Superficial fibular nerve

34
Q

Action of the fibularis longus

A

Plantar flexion, eversion, support arches of the foot

35
Q

The lateral compartment muscle that lies deep

A

Fibularis Brevis

36
Q

Origin and insertion of the fibularis brevis

A

Origin: fibula, distal to longus insertion

Insertion: 5th metatarsal tuberosity

37
Q

Innervation of the fibularis brevis

A

Superficial fibular nerve

38
Q

Action of the fibularis brevis

A

Plantar flexion and eversion

39
Q

Fibrous bands holding the peroneal/fibular tendons behind the lateral malleolus

A

Peroneal Retinacula

KN 251 Unit 3 (11 decks)

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