Ottawa knee rules


Also found in: Acronyms.

Ottawa knee rules

A clinical prediction rule used to determine the appropriate use of knee x-rays after an injury. Variables that suggest a knee fracture or dislocation include a patient over 55 years old, tenderness at the head of the fibula, isolated tenderness of the patella, inability to flex the knee to 90°, and inability to bear weight on the affected leg both immediately after the injury and in the ER.
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