Small stature with underdeveloped lungs. Type III Bones fracture easily. Fractures often present at birth. X-rays may reveal healing of in utero fractures. Barrel-shaped rib cage.
Sclera have a blue, purple, or gray tint.
Brittle teeth and hearing loss possible. Type IV Between Type I and Type III in severity. Bones fracture easily, most before puberty. Barrel-shaped rib cage. Tragically, however, OI is often mistaken for child abuse.