Cleidocranial Dysplasia, also called the Marie-Sainton disease or Mutational Dysostosis, is a congenital hereditary disorder when the collar bones (cleido) and the bones of the head (cranial) fail to develop normally. People with cleidocranial dysplasia are sometimes called rubber men because of they have loose joints and are sometimes able to touch their shoulders together in front of the body.

This cleidocranial dysplasia support group will let you get in touch with other people who have loved ones with the condition, and contact doctors and therapists also.