Banner Knee Injuries

Question 1

An injury to which ligaments will cause bleeding?

Answer 1

ACL and PCL (intracapsular ligaments)

Question 2

Which part of the meniscus will cause bleeding?

Answer 2

peripheral 1/3rd

Question 3

What happens if you lose meniscus?

Answer 3

get arthritis (due to loss of dissipation of force)

Question 4

Which part of the meniscus being removed would more likely cause arthritis?

Answer 4

removing the lateral lmeniscus

Question 5

If you have latteral collateral ligament tear you have to worry about the (blank) nerve

Answer 5

common fibular (peroneal) nerve

Question 6

Which is more commonly injured, the PCL or ACL

Answer 6

ACL

Question 7

What are these:
PATELLAR TENDON
QUADRICEPS TENDON
HAMSTRING TENDONS
POPLITEUS TENDON

Answer 7

commonly injured extensor mechanisms

Question 8

Immediate (blank) indicates a tear or something really bad

Answer 8

swelling

Question 9

What symptoms indicate need for further evaluation?

Answer 9

pain 
swelling
inability to bear weight
loss of motion
instability 
deformity

Question 10

What does the ACL do?

Answer 10

resists anterior translation and medial rotation of the tibia, in relation to the femur.

Question 11

What does the PCL do?

Answer 11

resist forces pushing the tibia posteriorly relative to the femur.

Question 12

What is the exam that tests for ACL insufficiency?

Answer 12

lachmann exam

Question 13

how do you perform the lachman exam?

Answer 13

knee held in 15 degrees of flexion, femur stabilized, tibia tranlsated anteriorly, amount of translation and lack of end point recorded

Question 14

What does crepitus indicate?

Answer 14

loose body, meniscus tear

Question 15

What does the pivot shift test, test for?

Answer 15

Anterolateral Knee Instability

Question 16

How do you know if you have a fracture of the bone?

Answer 16

you will take a arthrocentesis, see blood, and if you have a fracture, the fat will rise to the top

Question 17

The nutrition for the entire articular surface comes from the (blank)

Answer 17

synovial fluid

Question 18

What are four ways you can get traumatic bloody effusion?

Answer 18

ACL tear
intra-articular fracture
osteochondral injury
peripheral meniscal tear

Question 19

Does a meniscus tear have healing potential?

Answer 19

yes if it is peripheral, no if it is central

Question 20

What kind of injury is this:
IMPACT INJURY
DIFFICULT TO DIAGNOSE
MICROFRACTURE

Answer 20

articular cartilage

Question 21

How do you fix articular cartilage?

Answer 21

with an osteochondral fracture: autograft, allograft transfer
or chondrocyte implantation

Question 22

If you have a dislocated knee, what is your biggest concern?

Answer 22

vascular (politeal artery)

Question 23

How do you describe displacement?

Answer 23

distal to proximal (i.e direction of tibial displacement)

Question 24

When you have a high energy injury to your knee, what will this result in?

Answer 24

multiligament disruption

Question 25

The (blank) is fixed proximally as it exits the fibrous tunnel of the adductor hiatus, enters the politeal space and is again tethered distally under the soleus
Can be torn, occluded or sustain an intimal injury that later occludes, >50%
Must have a high level of suspicion with knee locations because of this.

Answer 25

popliteal artery

Question 26

How do you reconstruct the ACL?

Answer 26

with the platellar tendon
hamstring tendon
allograft

Question 27

Which is more worrisome, an ACL tear or a PCL tear and why?

Answer 27

PCL because of the popliteal artery

Question 28

Do you operate on an MCL tear?

Answer 28

no

Question 29

Do you operate on an LCL, PL Complex tear? What should you be worried about?

Answer 29

no

peroneal nerve