Osteochondritis Dissecans of the Capitellum

Adolescents and young adults
Common in male baseball pitchers or female gymnasts
Lateral elbow pain
Most in anterolateral aspect of capitellum
50% heal conservatively

References:
Kijowski R et al. MRI Findings of Osteochondritis Dissecans of the Capitellum with Surgical Correlation. AJR 2005; 185:1453-1459