Ankylosing Spondylitis

Ankylosing Spondylitis Central

Fast Facts

Quick and informative Ankylosing Spondylitis facts

  • Many people with axial spondylarthritis progress to having some spinal fusion, known as ankylosing spondylitis.
  • The general onset of AS commonly occurs in individuals between the ages of 17 and 45 but can also affect children and the elderly.
  • Recent estimates show that the prevalence of AS in the United States is about 0.2-0.5%.
  • A clear sign of AS is a change in the sacroiliac joints at the base of the low back.
  • AS can cause episodes of acute iritis in up to 40 percent of patients.
  • AS is not a purely genetic disease, and genetic and environmental factors both likely play a part in determining the risk of its development.
  • The most common extraarticular manifestations of AS are inflammatory bowel disease, acute anterior uveitis and psoriasis.
  • Patients with AS are at increased risk of atlantoaxial subluxation and spinal cord injury.

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