MSK

Ottawa Knee Rule

Identifies patients with acute knee injuries who require radiography. Highly sensitive (~98–100%) for clinically important fractures.

01 / Clinical inputsComplete the fields below

Age ≥ 55 years

Isolated tenderness of the patella

Tenderness at the head of the fibula

Inability to flex knee to 90°

Inability to bear weight (4 steps) both immediately and in ED

The original source

Stiell IG, Greenberg GH, Wells GA, McKnight RD, Cwinn AA, Cacciotti T, McDowell I, Smith NA. Derivation of a decision rule for the use of radiography in acute knee injuries. Annals of Emergency Medicine 1995.

PMID 7574121 Ask House about this

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