Which of the following correctly states the Ottawa ankle rules criterion for obtaining ankle radiographs after acute ankle injury?
- A Bone tenderness at the posterior edge or tip of either malleolus, or inability to bear weight immediately and for four steps ✓
- B Pain anywhere around the ankle plus inability to bear weight for four steps
- C Swelling over the lateral malleolus with a positive anterior drawer test
- D Any bony tenderness over the midfoot alone
Correct answer: A. Bone tenderness at the posterior edge or tip of either malleolus, or inability to bear weight immediately and for four steps
Explanation
Ankle series is indicated by pain in the malleolar zone plus bone tenderness at the posterior edge or tip of the lateral or medial malleolus, or inability to bear weight both immediately after injury and for four steps in the emergency department. Midfoot tenderness at the navicular or base of the fifth metatarsal mandates foot films instead. Diffuse swelling and drawer testing are not rule criteria.
Reference: Tintinalli's Emergency Medicine: A Comprehensive Study Guide, 9th ed.
High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP
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