GPAtlas🧮 Clinical calculator · Musculoskeletal and injury
Ottawa ankle and foot rules
Decides whether an ankle or foot X-ray is needed after injury. The rules NICE NG38 supports, in anyone over 5. The answer is met or not met, not a severity.
Free to use, no account needed. Result: Ottawa rule result. Last reviewed 29 Jul 2026.
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Before you rely on the result: The rules decide whether imaging is indicated, not whether a fracture is present, and a negative rule does not exclude injury. They assume a reliable examination, so not where there is intoxication, a distracting injury, or altered sensation in the leg.
Related Ocean Article: Sprains and Strains.
Further reading: Falls.
Part of the GPAtlas clinical calculators, each result explained, built by practising UK GPs.