Authors

• Mehdi Mazloomi, MD
• Mohammad Hossein Ebrahimzadeh, MD
• Farzad Omidi Kashani, MD

Abstract

Epiphysealis dysplasia heminelica (Trevor’s syndrome) is a rare disease which is the result of abnormal development of cartilaginous external or internal segments of epiphysis. It is usually a single lesion. But with breakage of outgrowing cartilaginous masses, it may present as several free pieces in the joint. The abnormal cartilaginous outgrowths would stop with termination of child’s growth. The articular surface incongruity, however, can lead to early osteoarthritis. We are reporting this case because of rarity of this pathology, and also because of the presence of lesions on both sides of an ankle.