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    Ottawa Knee Rule

    Describes criteria for knee trauma patients so low risk as not to warrant knee imaging.
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    ottawa knee rule
    About the Creator
    Dr. Ian Stiell
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    Advice

    Patients who do not have any of the Ottawa knee rules present do not need an x-ray. If one or more of the conditions are met, then x-ray is recommended.

    Management

    For significant non-bony injuries, often crutches and a knee immobilizer can be helpful to assist with ambulation.

    Critical Actions

    Patients who do not have any of the Ottawa knee rules present do not need an x-ray. If one or more of the conditions are met, then x-ray is recommended.

    Many experts would consider this score “one directional.” Because the rule is sensitive and not specific, it provides a clear guide of which patients not to x-ray if all criteria are met. However if a patient fails the criteria, need for x-ray can be left to clinical judgement.

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