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Understanding a Complex Bone Disorder: Is Osteopetrosis a Rare Disease?

According to the National Institutes of Health, autosomal recessive osteopetrosis is estimated to occur in only 1 in 250,000 people. This low incidence answers the question, **is osteopetrosis a rare disease?** It is, in fact, a collective term for a group of inherited disorders characterized by excessively dense but brittle bones.