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 7 Oct 2026.
The calculator runs in your browser on this page. If it has not appeared, reload the page with JavaScript enabled.
Before you rely on the result: The rules decide whether imaging is indicated; a negative rule does not exclude injury. They assume a reliable examination, so not with intoxication, a distracting injury or altered leg sensation, nor for an injury over 10 days old.
Related Ocean Article: Sprains and Strains.
Further reading: Falls.
Part of the GPAtlas clinical calculators, each result explained, built by practising UK GPs.