What Is Osteogenesis Imperfecta?
Reviewed: Dr. Mera
3. Less Common Types
Type V is moderately severe with many fractures, bone deformities, and possible short stature. Type VI is very rare with an additional bone mineralization defect, multiple fractures, and usually a mildly short stature. Type VII is moderate in severity, with many fractures and bone deformities, including shorter arm and leg bones.
Type VIII is severe and marked by retarded growth, short limbs, a barrel-shaped chest, and decreased bone formation in the skull. Diagnosing a particular type of OI can be challenging. Genetics are used to identify the rare forms of OI because many of the symptoms overlap.
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