Macedo, F.2011-06-012011-06-012010Nascer e Crescer 2010; 19(1): 52-530872-0754http://hdl.handle.net/10400.16/666ABSTRACT A 14 year-old boy presented a two months’ history of left knee pain. Following X-ray findings, MRI of the knee was performed. Knee MRI findings lead to the diagnosis of osteochondritis dissecans. This disorder affects mainly male adolescents, and may involve knee, elbow or ankle joints. It is better evaluated by MRI.porKnee ostheochondritis dissecansMRIjournal article