Orthopedics Free

Ottawa Ankle Rules

Determines need for ankle X-ray after injury.

Enter Values

Bone tenderness at posterior edge/tip of lateral malleolus

Bone tenderness at posterior edge/tip of medial malleolus

Unable to bear weight (4 steps) immediately and in ED

Score

Author Ian G. Stiell et al.

First Published 1992

Evidence Guideline-endorsed

Category Orthopedics

Original Study A study to develop clinical decision rules for the use of radiography in acute ankle injuries (Ann Emerg Med, 1992)

About The Ottawa Ankle Rules identify adults with ankle or midfoot injury who do not need x-rays, reducing unnecessary imaging by ~30%.

Clinical Use Adults with acute ankle or midfoot injury within 10 days. Use cautiously in intoxicated, distracted, or head-injured patients.