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Patient guide · Advanced Endocrinology · 1 min read

Rare & Genetic Bone Disorders

Answers to common questions about rare & genetic bone disorders.

Questions on this page
  1. What is hypophosphatemic rickets?
  2. What is X-linked hypophosphatemia?
  3. What is hypophosphatasia?
  4. What is osteogenesis imperfecta?
  5. When should a rare bone disorder be suspected?

What is hypophosphatemic rickets?

It is a group of disorders characterized by abnormal phosphate handling, leading to impaired bone mineralization.

What is X-linked hypophosphatemia?

X-linked hypophosphatemia is an inherited disorder involving excessive renal phosphate loss and impaired bone mineralization.

What is hypophosphatasia?

Hypophosphatasia is a rare inherited disorder caused by reduced activity of tissue-nonspecific alkaline phosphatase and can affect bones and teeth.

What is osteogenesis imperfecta?

Osteogenesis imperfecta is a group of inherited disorders characterized mainly by increased bone fragility.

When should a rare bone disorder be suspected?

Consider evaluation when there are:

  • Recurrent fractures
  • Unexplained bone pain
  • Persistent low phosphate
  • Abnormal alkaline phosphatase
  • Short stature with skeletal abnormalities
  • Early tooth loss
  • Family history of unusual bone disease
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