Fibrodysplasia Ossificans Progressiva in Newborn Introduction There is a need for you to understand the implications of fibrodysplasia ossificans progressiva in newborn (FOP), a rare genetic disorder or rare disease that can manifest in newborns. It significantly affects mobility and quality of life due to abnormal bone development in muscles, tendons, and other connective tissues. As you read this post, you'll gain a deeper understanding of the symptoms, diagnosis, and management options available for newborns with this condition.