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Flashcards in Dissection 5 Deck (32):
1

What type of joint is the knee?

synovial hinge joint

2

How many articulations are there in the knee?

3- 2 between the femur and tibia, 1 betwee nthe femur and patella

3

What muscles mainly control flexion of the knee?

hamstrings and gastrocneumius

4

What nerves control flexion of the knee?

tibial and common fibular nerve

5

What muscles mainly control extension of the knee?

mainly quadriceps

6

What nerve mainly controls extension of the knee?

femoral nerve

7

What other movements are possible when the knee is flexed to 90 degrees?

medial and lateral rotation

8

What are hte important ligaments in the knee joint?

iliotibial tract; tibial and fibular collateral ligaments and the cruciate ligamnets

9

What are the menisci?

crescentic discs of fibrocartilage that act as shock absorbers as well as assist stabilisation

10

What is genu varum?

bandy/ bow legs

11

What is genu valgam?

knock knees

12

What might predispose to genu varum and valgam?

loss of the medial or lateral meniscus (bow legs and knock knees respectively)

13

Where are the menisci thicker?

thicker peripheraly where they are attached to the fibrous capsule

14

What makes the medial meniscus more vulnerable to tearing a in a knee injury?

it is attached peripherally to the tibial (medial) collateral ligament

15

What are the menisci point anchored to anteriorly and posteriorly?

by attachment to the tibial intercondylar area

16

What are the cruciate ligaments named anterior and posterior to?

their site of attachment to the intercondylar eminence of the tibia

17

How does the ACL travel in the joint?

passes superiorly, laterally and posteriorly to attach to the lateral femoral condyle

18

What does the ACL do?

prevents anterior displacement of the tibia on the femur and hyperextension of hte knee joint

19

What is the suprapatellar bursa an extension of?

the synovial cavity

20

What is the function of the suprapatellar bursa?

reduce frcition on the quadriceps tendon during knee movements

21

Where does the common fibular nerve divide into the superficial and deep fibular nerves?

fibular neck

22

What does the superficial fibular nerve supply?

muscle of the lateral compartment of the leg and skin/fascia of the dorsum of the foot

23

What does the deep fibular nerve supply?

muscles of the anterior compartment of the leg and the skin of the first interdigital cleft

24

What are the anterior and lateral compartments of the leg separtated by?

anterior intermuscular septum

25

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

fibularis longus and fibularis brevis

26

What do the fibularis longus and brevis attach to proximally?

fibular

27

What is the distal attachemnt for fibularis longus?

plnatar surface of the base of the 1st metatarsal

28

What is the distal attachment for fibularis brevis?

plantar surface of the base of hte 5th metatarsal

29

What is the main actions of the fibularis muscles?

evert the foot

30

Where does the posterior cruciate ligamnet lie in relation to the ACL?

medial

31

What is the route of the PCL through the joint?

passes superiorly anterior to attach to the medial femoral condyle

32

What is the function fo the PCL?

to prevent posterior displacement of the tibia on the femur and help prevent hyperflexion of hte joint