knee and Patello-Femoral Joint Flashcards Preview

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Flashcards in knee and Patello-Femoral Joint Deck (22):
1

knee capsule contains who many joints? names?

Tibiofemoral
Patellofemoral

2

just as the pelvic joint in which position is knee joint most stable?

closed packed position

3

what type of joint is the knee joint?

Modified Hinge Joint

4

what are the structures that provide support to the joint?

Cruciate Ligaments (a,p)
Collateral Ligaments (m,l)
Menisci (m,l)

5

what is larger the medial or the lateral condyles of the femur and the tibia?

Medial Condyles

6

what attaches tot he intercondylar area of the femur?

ACL

7

in order to be locked in in what way does the femur rotates?

?medially over the tibia in the last 20 degrees of flexion allowing for the anterior part of the medial condyle to become articulated

8

what muscle is responsible for knee flexion? how does it work?

popliteus
lateral rotation because it acts in a reverse pull manner upwards from the lateral condyles of the tibia

9

what are the intracepsular structures?

menisci
Cruciate ligaments (partially)
synovial membrane (does not cover the menisci)
fat

10

what are the reinforcements of the capsule of the knee?

Anteriorly
=patellar tendon
=retinacular fibres
Lateral
=popliteus
=biceps
=iliotibial tract
Medial
=pes anserinus tendos
Posterior
=tendon form semimembranosus

11

the capsule of the knee has 2 deficiencies they are

anterior for the supra patellar bursa
posterior for the bursa of the popliteus muscle

12

bakers bursatis is due to inflammation of what bursa?

Deep popliteal bursa

13

Pes Anserinus are the muscle insertions for...

Say Grace Before Sex
S)artorius
G)racilis
B)ursa
S)emitendinosus

14

ACL and PCL are intracapsular and intrasynovial?

False
they are intracapsular but extrasynovial

15

direction of the ACL, functionality

from tibial tuberosity [ant] to lateral condyle [post]
blocks femur from going backwards when standing
blocks tibia from sliding forwards when kicking

16

how is the ACL commonly damaged

when the leg is on extension and it is hype rotated laterally

17

to repair an ACL graft can be taken from

pes anserine, sartorius or the iliotibial tract

18

how is the PCL commonly damaged

hyper extension of the knee
fall on flexed knee

19

Medial Collateral Ligament

resists abduction (valgus) and lateral rotation
if damaged the medial menisci will also be damaged because of its deep fibres

20

Lateral Collateral Ligament

resists adduction (varus)
separated to the meniscus by the popliteus tendon

21

what part of the menisci is more easily damaged?

medial menisci

22

patella alignment is mediated by

strong vast us medialis
medial patellar retinaculum
raised lip on lateral femoral condyle