By Claudia Finis, mother with OI and Prof. Dr. Ralf Oheim, Chair of the National Bone Board at Universit├Ąts-Klinikum Hamburg-Eppendorf, Germany Claudia: “I can still remember the time when I felt like a big whale on four wheels meandering through the world. A vague idea about the existence of my knees and permanent heartburn accompanied…