Systemic Skeletal Conditions

Systemic skeletal conditions: Skeletal Dysplasias, Juvenile Idiopathic Arthritis


  • Skeletal Dysplasias are a group of bone and cartilage disorders that frequently result from genetic mutations. Osteogenesis Imperfecta is an example of a "brittle bone" disease that predisposes patients to recurrent fractures. Achondroplasia is the most common dysplasia that causes a form of dwarfism.
  • Juvenile Idiopathic Arthritis refers to a group of autoimmune conditions involving joint inflammation (i.e. arthritis) in patients before the age of 16. Joint pain and swelling may be present for a varying duration of time. Blood work aides in the diagnosis of arthritis and if arthritis is suspected, a referral to a pediatric rheumatologist is made.
  • Vitamin D and Calcium Requirements: The Recommended Daily Allowance of Calcium for infants 0-6 months is 200mg, infants 7-12 months is 260mg, children ages 1-3 is 700mg, children ages 4-8 is 1,000mg, and children ages 9-18 is 1,300mg (for reference, adults age 19-50 is 1,000mg). The Recommended Daily Allowance of Vitamin D in International Units (IU) for infants 0-12 months is 400 IU, and ages 1-70 is 600 IU (for reference, adults age >70 is 800 IU).


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