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Anatomy and Radiology - Test 1 > The Leg > Flashcards

Flashcards in The Leg Deck (62):
1

Compartments of the leg

Anterior
Lateral
Posterior (deep)
Posterior (superficial)

2

Fascia of the leg

Crural fascia

3

Membranes separating compartments

Interosseus (A/P(deep)
Transverse intermuscular spetum (Posterior)
Lateral Intramuscular septum (Lat/post (sup)
anterior intramuscular septum (ant/lat)

4

Nerves and arteries of each compartment

Anterior - anterior tibial artery, deep fibular nerve
Posterior (deep) - Fibular artery, posterior tibial artery, tibial nerve
Lateral - superficial fibular nerve

5

Anterior compartment of leg actions innervation and blood supply

Dorsiflexion of foot and extension of toes
Deep fibular nerve
Anterior tibial artery

6

Tendons of anterior leg compartment

Pass anterior to ankle joint and deep to extensor retinacula

7

Tibialis anterior

Dorsiflexes and inverts foot

8

Extensor digitorum longus

Extends lateral 4 toes with continued action dorsiflexes foot

9

Extenser hallucis longus

Extends the great toe and can dorsiflex

10

Muscles of anterior leg

Tibialis anterior
Extensor digitorum longus
Extensor hallicus longus
Fibularis tertius

11

Fibularis tertius

Dorsiflexes and everts foot

12

Drop foot is a result of damage to the

Deep fibular nerve bc cannot dorsiflex

13

Lateral compartment of the leg actions innervation and blood supply

Eversion of foot and plantarflexion
Superficial fibular nere
Fibular artery

14

Tendons of lateral compartment

Run posterior to lateral malleolus and deep to superior and inferior retinacula

15

Fibularis longus

Everts and plantarflxes

16

FIbularis brevis

Everts and plantarflexes

17

Muscles of lateral leg compartment

Fibularis longus
Fibularis brevis

18

Posterior compartment of the leg actions innervation and blood supply

Plantarflexion and inversion of foot...flexion of toes
Tibial nerve
Posterior tibial artery (and fibular artery)

19

Superficial muscles of posterior compartment and what they are named

Gastrocnemius
Soleus
Plantaris
Make up the triceps sucrae

20

Tendons of superficial posterior leg muscles

Gastroc and soleus Fuse to from the tendocalcaneous

21

Gastrocnemius

Plantarflexes foot and flexes leg

22

Soleus

Plantarflexes foot

23

Plantaris

Plantarflexes foot and leg

24

Engine that drives bipedalism

Plantarflexion

25

How does popliteal artery enter the fossa?

Through adductor hiatus

26

Popliteal vein accepts ____ that drains superficial posterior leg

Small saphenous

27

Common fibular nerve location and other branches

Under biceps femoris
Lateral sural cutaneous nerve to skin of calf

28

Tibial nerve other branches

Medial sural cutaneous nerve that becomes sural nerve following union with the lateral branch of the common fibular nerve

29

Tendons of deep muscles of the posterior compartment

Run posterior to medial malleolus and under flexor retinaculum to plantar side of foot

EXCEPT popliteus

30

Deep msucles of posterior function

Steady the leg on the foot when standing

EXCEPT POPLITEUS

31

Popliteus

Flexes knee and rotates tibia medially or femur laterally
Works at beginning of flexion to unlock the knee

32

Muscles of deep leg compartment

Popliteus
Tibialis posterior
Flexor digitorum longus
Flexor hallucis longus

33

Tibialis posterior

Plantarflexes and inverts foot

34

Flexor digitorum longus

Flexes lateral 4 toes and plantarflexes

35

Flexor hallcisu longus

Flexes great toe and plantarflexes

36

Moving posteriorly from medial malleolus

Tibialis posterior
Flexor digitorum longus
Posterior tibial artery
Posterior tibial vein
Tibial nerve
Flexor hallucis longus

Tom, Dick, And Very Nervous Harry

37

Knee joint articulation

Condyles of femur and condyles of tibia

38

Movements of knee joint

Flexion and extension
Also some medial and lateral when the leg is flexed
Fully locked when fully extended

39

Fibular (lateral) collateral ligament

Very strong
Extends from lateral epicondyle of femur to fibula
Damaged by medial blow

40

Tibial (medial) collateral ligament

Strong, flat band
From medial epicondyle to medial condyle of tibia
Directly attached to the knee capsule and medial meniscus
Damaged by lateral blow to the knee

41

Medial meniscus

Attached to tibial collateral ligament

42

Terrible triad

ACL, tibial collateral, and medial meniscus

43

Lateral meniscus

Less likely to be injured and not connected to fibular collateral ligament

44

ACL and PCL named for

Attachment on tibia

45

ACL prevents

Anterior displacement of the tibia on the femur and hyperextension of knee joint

46

ACL is slack when

Knee is flexed and taut when extended

47

Is PCL or ACL stronger?

PCL

48

If ACL torn, how can you test?

Anterior drawer sign
Tibia can be pulled anteriorly relative to the femus

49

How to damage ACL

Excessive medial roatation or hyperextension

50

PCL prevents

Posterior displacement of tibia on femur and hyperflexion of knee joint

51

PCL damaged by

hyperflexion

52

Tibial nerve

Branches from sciatic at popliteal fossa
Branches into the medial plantar and lateral plantar after the medial malleolus

53

Common fibular nerve

Also peroneal
Branches at popliteal fossa and runs laterally (medial to biceps femoris)
Most common injured nerve of lower extremity

54

When can common fibular be palpated?

When courses around neck of fibula

55

When does common fibular divide?

At neck of fibula into superficial and deep

56

Superficial fibular nerve innervates

Lateral compartment

57

Deep fibular nerve inervates

Anterior compartment

58

Popliteal branches into the

Anterior and posterior tibial arteries

59

Posterior tibial artery gives rise to the

Fibular artery

60

Posterior tibial artery becomes

Medial plantar artery

61

Anterior tibial artery becomes

DOrsal pedal artery

62

Anastamosis around the knee

Genicular anastamosis