Ellis-van Creveld syndrome, also known as "chondroectodermal dysplasia", is a rare genetic disorder characterized by short-limb dwarfism, polydactyly (additional fingers or toes), malformation of the bones of the wrist, dystrophy of the fingernails, partial hare-lip, cardiac malformation, and often prenatal eruption of the teeth. Ellis-van Creveld syndrome is most often seen among the Old Order Amish community in Lancaster County, Pennsylvania.