If xrays are positive (when indicated)
Treat underlying condition
If xrays are negative or not indicated Ottawa knee rules
Do full knee exam to check for ligamentous/meniscal instability:
Negative exam → RICE
Positive exam or unable to evaluate secondary to pain/swelling → knee brace + RICE
Treat underlying condition
Do full knee exam to check for ligamentous/meniscal instability:
Negative exam → RICE
Positive exam or unable to evaluate secondary to pain/swelling → knee brace + RICE
Negative exam → RICE
Positive exam or unable to evaluate secondary to pain/swelling → knee brace + RICE
Acute knee injury
Knee dislocation
Knee fractures
Patella fracture
Ankle sprain
Segond fracture
Ankle fracture 
Tibial plateau fracture