What Is Osteogenesis Imperfecta?
2. Common Types
There are at least eight primary types of this bone disease, which range widely in severity. Type I is the most common and mildest form of the condition. Bones tend to be mildly fragile, and fractures can still occur with only slight trauma. Most patients live a fairly normal life.
Type II is the most severe form. Death occurs before birth, shortly after birth, or within weeks. Babies are often born with underdeveloped lungs, broken ribs, and severe bone deformities. A Type III patient survives past infancy but may have many fractures and deformities, a curved spine, and a very short stature requiring later wheelchair use. Type IV symptoms can include brittle bones, retarded growth, and bone deformity but a normal life expectancy.
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