1. Introduction Fibrodysplasia ossificans progressiva (FOP) is a rare but devastating autosomal dominant genetic disorder characterized by spontaneous or trauma-induced progressive extra-skeletal bone formation, called heterotopic ossification (HO), in skeletal muscles, tendons, and ligaments [1]. HO forms through endochondral ossification, the process that creates most bones during embryonic development [2]. Endochondral ossification occurs through the […]
