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Metabolic Bone Diseases in Children

Disorders of bone mineralization, density, and remodeling in pediatric patients.

Written by: Saygı Hospital Health Guide Editorial Board
Last updated:

This content has been compiled by the Saygı Hospital Health Guide Editorial Board and is periodically reviewed by a specialist physician.

References (5)

This content is for informational purposes only and does not constitute medical advice. You can book an appointment at our Çocuk Sağlığı ve Hastalıkları department. Book Appointment →

What is Metabolic Bone Diseases in Children?

Pediatric metabolic bone diseases are a heterogeneous group of disorders that disrupt mineralization (rickets), bone formation (osteogenesis imperfecta), bone resorption (osteopetrosis), or specific phosphate handling (X-linked hypophosphatemia, tumor-induced osteomalacia). Children are especially vulnerable because of rapid skeletal growth and the need for adequate calcium, phosphate, vitamin D, and growth factors.

Clinical features depend on the underlying disorder and may include bowing of the legs, rachitic rosary, frontal bossing, fractures from minor trauma, dental anomalies, growth failure, and bone pain. Laboratory evaluation focuses on serum calcium, phosphate, alkaline phosphatase, 25-OH vitamin D, parathyroid hormone, fibroblast growth factor 23 (FGF23), and renal tubular reabsorption of phosphate.

Treatment is disease-specific. Nutritional rickets responds to vitamin D and calcium replacement; X-linked hypophosphatemia is managed with conventional phosphate plus calcitriol or with the FGF23-targeting antibody burosumab; osteogenesis imperfecta is treated with cyclic intravenous bisphosphonates and orthopedic care; osteopetrosis severe forms may require hematopoietic stem cell transplantation. Multidisciplinary follow-up by pediatric endocrinology, genetics, orthopedics, and dentistry is essential.

Symptoms

Bowing of legs and short stature
Frontal bossing and craniotabes
Rachitic rosary on the rib cage
Recurrent fractures from minor trauma
Dental enamel defects and abscesses
Bone pain and muscle weakness
Delayed walking or motor milestones
Hypocalcemic seizures in infants

Risk Factors

Vitamin D deficiency in mother and child
Limited sunlight exposure
Exclusive breastfeeding without supplementation
Malabsorption (celiac, cystic fibrosis)
Family history of bone fragility
PHEX or COL1A1/COL1A2 mutations
Chronic kidney or hepatic disease
Anticonvulsant therapy

When to See a Doctor?

If you experience any of the following symptoms, seek medical attention promptly:

  • Bowing legs in toddlers
  • Multiple fractures with minor trauma
  • Failure to thrive with skeletal deformity
  • Persistent dental abscesses or enamel loss
  • Family history of bone fragility

Treatment Methods

01
Vitamin D and calcium supplementation
02
Oral phosphate plus calcitriol for XLH
03
Burosumab (anti-FGF23 antibody) for XLH
04
Cyclic intravenous bisphosphonates for OI
05
Orthopedic management of fractures and deformity
06
Genetic counseling and testing
07
Hematopoietic stem cell transplant for severe osteopetrosis

Which Department to Visit?

You can visit our Çocuk Sağlığı ve Hastalıkları department for these complaints. Our specialist physicians will create the most suitable treatment plan for you.

Learn About Çocuk Sağlığı ve Hastalıkları Department

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Health Disclaimer: The information on this page is prepared for general informational purposes only. It does not replace medical diagnosis and treatment. Please consult your physician for your complaints. Saygı Hospital does not accept responsibility for actions taken based on the information on this page.