Advanced Search
Discover new calcs: choose 1 function + 1 more filter
Examples:
Click here to discover
Pulmonary Embolism
calculators for
Diagnosis
After you diagnose a PE, discover
Pulmonary Embolism
calculators for
Prognosis

    Calc Function

  • Calcs that help predict probability of a diseaseDiagnosis
  • Subcategory of 'Diagnosis' designed to be very sensitiveRule Out
  • Disease is diagnosed: prognosticate to guide treatmentPrognosis
  • Numerical inputs and outputsFormula
  • Med treatment and moreTreatment
  • Suggested protocolsAlgorithm

Disease

Select...

Specialty

Select...

Chief Complaint

Select...

Organ System

Select...

Ottawa Knee Rule

Describes criteria for knee trauma patients so low risk as not to warrant knee imaging.

ottawa knee rule
About the Creator
ian stiell
Dr. Ian Stiell
Related Calcs
Content Contributors

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.

Content Contributors
Related Calcs