Ottawa Knee Rule
If any criterion is present, knee X-ray is commonly recommended in teaching pathways (age, fibular head tenderness, isolated patellar tenderness, flexion <90°, inability to bear weight).
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How it works
The Ottawa knee rule is a clinical decision rule for acute knee injury in selected adults and children per original criteria.
Limits
Does not replace neurovascular exam, open fracture evaluation, multi-ligament injury suspicion, or intoxication altering exam.
Educational tool only—not for diagnosis or treatment decisions.