Children born with arthrogryposis (also called "arthrogryposis multiplex congenita") have stiff joints that don't move well. This rare condition affects children in different ways. In some cases, it only impacts a few joints and doesn’t have much effect on kids’ movement. More severe forms can fuse together joints, including in the jaws and back. In either case, at Nemours we have the same goal: To help kids move as independently as possible. We’re here to help your child get around, play and just be a kid.