Ottawa ankle rules

The Ottawa Ankle Rules are a set of clinical decision rules used by healthcare professionals to decide if a patient with ankle or midfoot pain needs an X-ray. They were developed to decrease unnecessary X-rays while ensuring that fractures requiring treatment are not missed.

Here's how they work:

An X-ray is only required if the patient has:

For Ankle pain:

• Bone tenderness along the distal 6 cm of the posterior edge of the tibia or tip of the medial malleolus (inner bump of the ankle bone) OR
• Bone tenderness along the distal 6 cm of the posterior edge of the fibula or tip of the lateral malleolus (outer bump of the ankle bone) AND
• An inability to bear weight for four steps both immediately after the injury and in the emergency department

For Midfoot pain:

• Pain in the midfoot zone AND
• Bone tenderness at the base of the fifth metatarsal (bone on the outside of the foot) OR
• Bone tenderness at the navicular bone (boat-shaped bone on top of the foot) OR
• An inability to bear weight for four steps both immediately after the injury and in the emergency department

Important points to remember:

• The Ottawa Ankle Rules are highly effective in reducing unnecessary X-rays while maintaining accuracy.
• They are not a substitute for clinical judgment and should be used in conjunction with other evaluation methods.
• They are primarily meant for adults and older children and may not be appropriate for younger children or individuals with specific medical conditions.
• If you have any concerns about your ankle or midfoot pain, always consult a healthcare professional for proper diagnosis and treatment.