Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

MSK > Knee Exam 1 > Flashcards

Knee Exam 1 Flashcards

1
Q

what are knee ligaments crucial for?

A

laxity and neuromuscular control

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

ligament strength in newtons.

A

MCL (4500) > PCL (2500) > ACL (2200) >LCL (750)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What is microtrauma vs macrotrauma?

A

repeated bouts vs. trauma from single event

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

how do 70% of ACL tears occur?

A

deceleration + pop + swelling 12-24 hours

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

structures that can be affected from a varus stress:

A

LCL +/- ACL
growth plate
posterolateral complex
lateral meniscus tear

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

structures that can be affected from a valgus stress:

A

MCL +/- ACL
growth plate
MM + ACL
patellar subluxation/dislocation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

structures that can be affected from hyperextension

A

ACL +/- menisci
tibial spine avulsion fx in kids
ACL +/- PL corner

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

structures that can be affected by hyperflexion

A

menisci

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

structures affected in decceleration

A

ACL +/- meniscus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

direct blow to a flexed knee causes?

A

PF: PCL injury
DF: patella fx

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

if a fx occurs <2 hours ago and theres an immediate, tense hemarthrosis, what is this most likely affecting?

A

patella dislocation

tibial plataeu fx

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

swelling within 2-12 hours indicates…

A

ACL injury

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

synovial swelling occuring 12-24 hours later indicates…

A

menisci injury

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

chronic, trace, or 1+ effusion indicates…

A

DJD or menisci

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

anteromedial band of ACL is taught in

A

flexion and extension

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

posterolateral band of ACL is taught in

A

extension

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

ACL injury has primary restraint to…

A

anterior translation

medial rotation

18
Q

ACL injury has secondary restraint to

A

valgus and varus rotation

19
Q

associations with ACL tears

A

meniscal injuries, females, bone bruises

20
Q

examples of autografts

A

central 1/3 of patellar tendon

quadrupled semitendinosus/gracilis

21
Q

B-PT-B is more…

vs hamstring being more…

A

stiff

elastic

22
Q

difference between the strength of the autograft vs the allograft.

A

autograft: strongest in the beginning, weakens at 8 weeks, strongest again at 2 years
allograft: strongest in the beginning and then weeks 8-12 are weakest

23
Q

in an allograft: how long does it take to go from a tendon to a ligament?

A

4 weeks

24
Q

anterolateral band of PCL is taut in…

A

flexion

25
Q

posteromedial band of PCL is taut in…

A

extension

26
Q

PCL + PLC/collateral ligament injury causes how much post displacement?

A

15-25 mm

27
Q

how much displacement with just a PCL injury?

A

3mm

28
Q

primary restraint of PCL is..

secondary restraint to…

A

posterior translation
medial rotation

valgus and varus rotations

29
Q

why can you have a +/- tender calf for a PCL injury?

A

because PCL is more interarterial & highly vascularized so more blood will flow down into calf

30
Q

PCL insufficiencies can lead to an increased chance of…

A

degenerative joint disease

31
Q

PCL frequently occurs with what…

A

MCL and arcuate ligament complex

32
Q

If PCL, MCL, or LCL injured, this can lead to what?

A

knee dislocation

33
Q

only stay nonsurgical for PCL if

A

<10mm

34
Q

what are the rehab implications for a PCL reconstruction?

A

fixation is less rigid so you need to go slower with PT since the graft isn’t robust

35
Q

nonoperative management of PCL?

A

Quads strengthening

NM training

36
Q

allografts used for PCL

A

Achilles tendon and 2/3 patellar tendon

37
Q

what is the most common knee ligament injury?

A

MCL

38
Q

signs/symptoms of MCL injury

A 
swelling 
no hemarthrosis (since extraarticular)
39
Q

when MCL injury, you will have tenderness where specifically?

A 
tibial insertion 
adductor tubercle (60%)
40
Q

LCL sprain occurs frequently with…

A

PCL
posterolateral knee joint capsule
peroneal nerve

MSK (5 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions