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Flashcards in knee Deck (38):
1

joints in knee

tibiofemoral
patellofemoral

2

ligs in knee
6 of them

-medial capsular (deep)
-med collateral (superfic)
-lat capsular (deep)
-lateral collateral
-ant cruciate lig
-post cruciate lig

3

how is the medial meniscus shaped?
what sits in it?
what does it attach to?

medial (c shaped):
-attaches to med capsular lig
-med tib plateau

4

origin and insertion of patellar tendon

O: inf of patella
I: tib tubercle

5

what muscles only extend knee

-vastus lateralis
-vastus medialis
-vastus intermedis

6

what are the actions of the rectus femoris

-flex hip and extend knee

7

muscles of hamstrings
-actions of these muscles

-semitendinosis
-semimembrinosis
-bicep femoris
-actions: flex knee/extend hip

8

muscles of pes anserine group
-action of these muscles

-sartorius
-gracilis
-semitendinosis
-action: flex knee

9

where do all the pes anserine muscles insert

pes anserine tendon
-sup to MCL

10

origin and insertion of IT band

O: ASIS/iliac crest as tensor fascia latae
I: gerdys tub (lat tibia)

11

valgus/vargus stress test
-what are you testing?

-test @ 0 flex then 20-30 flex
-push on inside and outside of knee
-testing: MCL/LCL

12

anterior drawer test of knee
-what are you testing?

-knee flexed 90 pull tibia towards you while sitting on foot
neutral foot: testing ACL
ER foot: testing ACL and med structures
IR foot: testing ACL and lat structures

13

why is the anterior drawer test of knee not very reliable

hamstrings will give false negative if contracted

14

posterior drawer test of knee
what are you testing?

-testing PCL
-same as anterior drawer test but push tibia back
-tibia will line up femur of make a C shape

15

Lachman stress test
what are you testing?
what are you looking for?

-testing ACL
-knee flex 10-15
-hands on distal femur and prox tibia
-pull tib up and femur down
-look for: an end pnt

16

mcmurray stress test\
-what are you testing?
-what are you looking for?

-testing menisci
-flex knee 90
-hand on knee and heel
med men: vargus, extend knee
lat men: valgus, extend knee
-look for increased pain or popping

17

apleys compression test
what is it testing for?

-menisci
-lying on stomach flex knee 90
-push down on foot
-IR/ER rotate foot then push down

18

mechanism of MCL injury

valgus force (hit on lat side of leg)

19

what happens if mechanism of MCL injury is severe enough

injury to O'Donaghues triad
-med collateral
-anterior cruciate
-med menisci

20

mechanism of LCL injury

vargus force (hit on med side of leg)

21

what happens if mechanism of LCL injury is severe enough

injury to
-bicep femoris at insertion
-IT band at gerdy tub

22

5 mechanisms of ACL injury

-IR of lower leg, ER of femur/body
-ER of lower leg, IR of femur/body
-force that drives tibia forward when knee id flexed
-hyperextension (tibia moves back)
-deceleration

23

mechanism of PCL injury

-force to ant tibia while knee flexed 90
-fall on tib tub

24

signs/symptoms of knee injuries
6 of them

-pain/tenderness
-swelling
-limit of motion
-muscular dysfuntion/spasms
-inability to walk
-ecchymosis

25

signs and symptoms of knee injuries that can occur days to weeks later

-clicking
-locking
-instability
-pinching w/ jnt

26

what is important about meniscus for tears

outer 1/3 is vascular
middle is possibly vascular

27

chondromalacia patella

-softening of artic cartilage of post aspect of patella

28

patella femoral pain syndrome

-patella doesnt stay in groove
-tendancy to ride over lat condyle due to quads contracting

29

IT band friction syndrome

during flexion and extension IT band irritated by lat femoral condyle
flex: moves from post to lat condyle
ext: moves from ant to lat condyle

30

obers test
what does it test for?

tests: IT friciton snydrome
-lay on side
-flex knee 90
-hip neutral
-abd hip ad drop
look for: if stuck band is tight

31

nobles test
what does it test for

tests for: IT friciton syndrome
-sit on edge of table
-pressure on insertion
-flex/ext knee

32

osgood schlatters disease
signs/symp

disorder of growing tibial tub
S/S:
-pain/swelling/local tender of tibial tub

33

cause of osgood schlatters

-kneeling, jumping, running
-direct trauma
-any stress at patella tendon

34

treatmetn of osgood schlatters
3 of them

-decrease acitivty/lessen stress
-ice
-increase quad work

35

osteochondritis dissecans
where is it usually?

arae of bone under goes changes which result in piece of bone loose in jnt
-usually in post lat aspect of med condyle

36

cause of osteochondritis dissecans

-direct blow to patella diriving back on femur
-impairmen of blood to affect area of femur
-heredity

37

what is the lateral meniscus shaped like?
what sits in it?
where does it attach?

lateral (o shaped)
-moveable
-doesnt attache to lat capsular lig
-lat tib plateu sits in it

38

parts of both menisci

-ant portion = body
-post portion = horn
-outer part thicker than inner
-coranary lig ties outer edge to tib
-transerve lig ties two parts together