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LECOM MS1 Gross Anatomy - Back/UE/LE 2022 > Leg > Flashcards

Leg Flashcards

1
Q

Where does the leg extend to?

A

From knee to ankle

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2
Q

What makes the leg susceptible to compartment syndrome?

A

Crural fascia

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3
Q

What are the three compartments of the leg?

A

Anterior, lateral, posterior

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4
Q

What innervates the anterior compartment?

A

Deep fibular n (L4-S1)

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5
Q

What innervates the lateral compartment?

A

Superficial fibular nerve (L5-S1)

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6
Q

What innervates the posterior compartment?

A

Tibial nerve (S1-S2)

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7
Q

What artery has branches supplying each compartment?

A

Popliteal artery -> from femoral artery

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8
Q

What spinal level is the patellar reflex?

A

L4

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9
Q

What spinal level is the Achilles reflex?

A

S1

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10
Q

What nerve is in direct contact with the neck of the fibula?

A

Common fibular nerve

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11
Q

Anterior compartment major functions

A

Dorsiflexion, toe extension, inversion, eversion

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12
Q

Posterior compartment major functions

A

Toe flexion, plantar flexion, inversion

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13
Q

Lateral compartment major function

A

Eversion

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14
Q

What is the height of the common fibular nerve?

A

About the height of a car bumper

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15
Q

Muscles in anterior compartment

A

Tibialis anterior, extensor digitorum longus, extensor hallicus longus, fibularis tertius, extensor digitorum brevis

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16
Q

Chief inventors of foot

A

Tibialis anterior & posterior

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17
Q

Chief evertors of foot

A

Fibularis longus and brevis

18
Q

Muscle that unlocks knee joint

A

Popliteus

19
Q

Muscle impacted by foot slap

A

Tibilias anterior

20
Q

What is the primary function of EDL?

A

Extends toes 2-5

21
Q

What is the primary function of EHL?

A

Extends great toe

22
Q

What is the most variable anterior muscle?

A

Extensor digitorum brevis

23
Q

What are the muscles of the lateral compartment?

A

Fibularis longus and brevis

24
Q

Where does the fibular longus attach?

A

Tendon attaches to base of 1st metatarsal

25
Q

Where does fibularis brevis attach?

A

Base of 5th metatarsal

26
Q

What composes the triceps surae?

A

Gastrocnemius and soleus

27
Q

Where does the triceps surae attach?

A

Achilles tendon

28
Q

Where can you find the plantaris?

A

Under the gastrocnemius

29
Q

What is the main function of the posterior compartment?

A

Plantarflexion

30
Q

What are the components of the posterior compartment?

A

Triceps surae, plantaris, popliteus, tibilias posterior, flexor digitorum longus, flexor hallicus longus

31
Q

What is the major function of the popliteus?

A

Medial rotator (unlocks knee), sits deep in popliteal fossa

32
Q

What are the branches of the popliteal artery?

A

Superior muscular, sural, cutaneous branches, geniculars

33
Q

What are the two major divides of popliteal artery?

A

Anterior tibial and posterior tibial

34
Q

What tendon is affected of the avulsion fracture of 5th metatarsal?

A

Fibularis brevis

35
Q

What is the ligament that checks backward displacement of the femur on tibia?

A

Anterior cruciate ligament

36
Q

What ligament has laxity during a positive valgus maneuver?

A

Medial collalateral

37
Q

What division of the popliteal artery goes into anterior compartment?

A

Anterior tibial

38
Q

What division of the popliteal artery goes into the posterior compartment?

A

Posterior tibial

39
Q

What artery goes to lateral compartment?

A

Fibular artery

40
Q

Injury of the tibial nerve near the popliteal fossa causes?

A

0/5 muscle strength of plantarflexion, and 0 Achilles reflex

41
Q

Tibial nerve injury near the ankle

A

No muscle weakness

42
Q

Etiology of common fibular nerve injury

A

Diabetes, age

LECOM MS1 Gross Anatomy - Back/UE/LE 2022 (25 decks)

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