[Fibrodysplasia ossificans progressiva in children. The interest of early diagnosis and treatment].

Introduction: A rare genetic disease (with around a hundred cases in France), fibrodysplasia ossificans progressiva is characterized by heterotopic ossification and congenital malformation of the bones. It is worsened by physical trauma, progresses in successive flares and slowly results in total confinement of the children because of the calcification of the muscles and ankylosis of all the joints.

Observations: We report the case of two children exhibiting fibrodysplasia ossificans progressiva in whom diagnosis was delayed at the age of 4 and 18 months respectively.