Osteogenesis Imperfecta is a health condition that causes extremely fragile bones. There are many different types. I became aware of this because my niece was born with the most severe form. We've struggled to find and create clothing for her to be able to wear without breaking. Are you crafty and would like to help?
(This blog may have things that do not apply to you. This is also, just a personal log, try any of these things at your own risk. These are not backed or recommended by any medical information. Speak to your doctor before trying any/all of these things.)