Causes of pseudoarthrosis.. Fibrous displasia. Neurofibromatosis. Osteogenesis imperfecta

 Causes of pseudoarthrosis:
A- Paget's disease. False
B- Osteopetrosis. False
C- Scurvy. False
D- Fibrous displasia. True
E- Neurofibromatosis. True
F- Osteogenesis imperfecta. True