Epiphysiolysis of the capitellum humeri.

A four-year-old girl presents at the emergency department with left elbow pain after a fall. X-ray demonstrated an epiphysiolysis of the capitellum humeri, without a bony fragment, the so-called Salter Harris Type 1 fracture. The fracture was treated by open reduction and internal fixation. This case is unusual because avulsions of the capitellum are usually associated with a bony fracture.