My name is Mark Wagner, founder of Special Bones. I have Osteogenesis Imperfecta (OI). My condition is termed as Type I OI. This is the mildest form of the disease. My dad had it, two of my brothers have it, five nieces and nephews who have it, and my two children have it. There are now 13 people in my family who have it. As far as we know, we have the most members of one extended family who have it.