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Likelihood Ratio (LR) in Emergency Medicine

4/11/2014

Ottawa ankle rules. 
Does it really work?

Clinical Scenario

A 16 yo guy is brought in ED by his mother after a scholar accident.
While he was running, he crashed. 
My son has a sore ankle!  Is it broken? Asks the mother seriously worried.  
The ankle his slightly tumefied, there isn’t bone tenderness at the posterior edge or tips of either malleolus, neither there is pain during the pressure of the navicular bone or the base of the fifth metatarsal. 
Are you able to take 4 steps? - asks the doctor.


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