This chapter is from the book Managing Osteogenesis Imperfecta: A Medical Manual, which is a reference for the medical community, parents of children with OI or those who themselves have OI who want to become active participants in their medical management. This updated resource book provides a comprehensive reference source & addresses major areas of concern with emphasis on practical issues of treatment. Each of the 22 chapters is written by a medical professional skilled in dealing with that subject area as it concerns OI.