This 4-year-old girl fell on her right arm and was diagnosed with a nursemaid's elbow. Close review of the radiograph shows the presence of a posterior fat pad (arrowheads) that is due to an effusion and suggests a high likelihood of a fracture. In addition, a subtle cortical defect is visible (arrow) on the anterior surface of the distal humeral metaphysis.
Reproduced with permission from: Baskin M. Trauma: Extremeties. In: Atlas of pediatric emergency medicine, Fleisher GR, Ludwig S, Baskin M (Eds), Lippincott Williams & Wilkins 2004. Copyright © 2004 Lippincott Williams & Wilkins.
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