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October 2002

By Theodore E. Keats, MD

 

A 16-year-old boy complains of elbow pain of three months' duration. What is your interpretation of the demonstrated lesion in his radial head?

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ANSWER


The correct diagnosis is osteochondritis dissecans of the radial head, a process that more often affects the capitellum at this patient's age. Overuse is thought to be the likely cause of the condition, which often develops in adolescent athletes.

 
For further reading, see F. N. Silverman and J. P. Kuhn, Caffey's Pediatric X-ray Diagnosis, 9th ed., St. Louis, Mosby-Year Book, 1993, p. 1831.
 

Emerg Med 34(10):75, 2002

This series of diagnostic quizzes that challenge your ability to read a variety of x-ray films is edited by Dr. Keats, professor of radiology and professor of orthopedics at the University of Virginia School of Medicine in Charlottesville.



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