Lecture week 1 and 2 Flashcards Preview

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Flashcards in Lecture week 1 and 2 Deck (17)
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1

What is the presentation of PCL?

young athlete, knee pain below tibia w/knee flexed
minimal swelling
discoloration/bruising post. lower leg day or two (d/t rupture of capsule w/drainage in fascial plan)

2

MC mechanism of PCL

hyper flexion or Dashboard injury

3

A posterior translations of what can create the Sag sign?

tibia on femur

4

What ortho exam test the PCL?

posterior drawer test

5

Depression of tibial tubercle occurs d/t what structure moved posteriorly?

tibial tuberosity

6

Is the PCL shorter or longer than the ACL and by how much?

Longer by 30 percent

7

What are the 2 bundles of the PCL?

anterolateral = tight in Flexion
posteromedical = tight in Extension

8

Where is PCL located?

b/t meniscofemoral ligaments

9

What is the biomechanics strength of PCL?

2500-3000 N posterior
minimizes posterior tibial displacement 95 percent

10

Meniscus tears occur following what actions?

flexion or rotation

11

What is the hallmark of meniscus injury?

clicking, popping or locking
knee locking in flexion

12

Meniscus are made of what type of fibers?

fibroelastic cartilage

13

What are the function of the meniscus?

increasing congruency
shock absorption
transmitting 50 percent weight bearing load in extol 85 in /flexion and secondary stabilizer

14

Causes of menisci tears

compression and rotation
slow healing
outer 25 percent vascularization via fibrocartilage scar formation

15

What is pt symptoms be with menisci tear?

pain located to R/L
mechanical locking/clicking especially w/squat
delayed/intermittent swelling

16

What are good oaths for meniscus tear is suspected?

mcmurray
apply compression
thessalys
bounce home
MRI if severe to fully view extent of dame

17

What is required for meniscus tear physical exam?

joint line tenderness (most sensitive)
effusion
provocative test
MRI, High false positive, sensitive dx test