basic

Ottawa Knee Rule Fracture Risk Calculator

Any criterion met → knee imaging indicated.

Applies the Ottawa knee rules: if any criterion is present, knee radiography is indicated to rule out fracture.

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Priya Venkatesan By Priya Venkatesan
Published Last reviewed 1 min read

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  1. Fill in the inputs above using the units you already have.
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Formula

Imaging if age≥55, isolated patella tenderness, fibular tenderness, flexion<90°, or unable to bear weight

In depth

Applies the Ottawa knee rules: if any criterion is present, knee radiography is indicated to rule out fracture.