11. Brennan comes from a multigenerational family with osteogenesis imperfecta. 12. His Ilizarov apparatus is still used today as one of the distraction osteogenesis methods. 13. Ilizarov used distraction osteogenesis to heal the non-union and leg length discrepancy. 14. Ingram has a form of osteogenesis imperfecta, also known as brittle bone disease. 15. In newborns, X-rays readily distinguish hypophosphatasia from osteogenesis imperfecta and congenital dwarfism. 16. BMP8A may be involved in epithelial osteogenesis . 17. There are three activins : Activin AB . Activins are involved in embryogenesis and osteogenesis . 18. Press suffered hundreds of broken bones, the result of an inherited condition, osteogenesis imperfecta. 19. Researchers have demonstrated the use of MSCs for the treatment of osteogenesis imperfecta ( OI ). 20. The biologic mechanisms that provide a rationale for bone grafting are osteoconduction, osteoinduction and osteogenesis .