Flashcards in 04 Ottawa Knee Rule Deck (12):
Why was the Ottawa Knee Rule developed?
- most patients with acute knee injuries seen in ERs undergo radiography of the knee
- a fx occurs only 7% of the time
How accurate is a negative result on the Ottawa Knee Rule test?
accurately excluded knee fractures after an acute injury with 99% accuracy
What do most knee injuries result from?
- direct blow
- twisting injury
What are blunt injuries?
blows and falls
Blunt injuries account for what percentage of all knee injuries?
Blunt injuries are responsible for what percentage of all knee fractures?
Finding a fracture: blunt injury vs. twisting injury
You are 4x more likely to find a fx after a blunt injury than a twisting one
What is an indicator of a fracture?
What are the Ottawa Knee Rules (overall)?
series of 5 yes or no questions that determine whether the patient needs a radiograph
What are the 5 Ottawa Knee Rules?
1. aged 55 or older
2. isolated tenderness of the patella
3. tenderness at the head of the fibula
4. inability to flex knee past 90˚
5. inability to bear weight both immediately and in the ER for 4 steps
If there's a fracture, will there be tenderness anywhere else?
no bone tenderness of the knee other than the patella