Ankylosing spondylitis CT

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Ankylosing spondylitis Microchapters


Patient Information


Historical Perspective




Differentiating Ankylosing spondylitis from other Diseases

Epidemiology and Demographics

Risk Factors

Natural History, Complications and Prognosis


History and Symptoms

Physical Examination

Laboratory Findings

X Ray



Other Imaging Findings

Other Diagnostic Studies


Medical Therapy


Primary Prevention

Secondary Prevention

Cost-Effectiveness of Therapy

Future or Investigational Therapies

Case Studies

Case #1

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] ; Associate Editor(s)-in-Chief: Manpreet Kaur, MD [2]


The term ankylosing is derived from the Greek word ankylos, meaning stiffening of a joint.CT allows direct visualization of the abnormalities in peripheral and axial joints. CT has resulted in a major improvement in the evaluation and management of patients with AS. Findings on CT scan suggestive of ankylosing spondylitis include erosion, osteoporosis / sclerosis, and new bone formation. However,CT has poor ability to detect soft-tissue changes and best in detecting osteoporosis or osteosclerosis.

CT scan

Case courtesy of Dr Ali Abougazia,
CT scan in ankylosing spondylitis showing Bamboo spine


  1. Ostergaard M, Lambert RG (August 2012). "Imaging in ankylosing spondylitis". Ther Adv Musculoskelet Dis. 4 (4): 301–11. doi:10.1177/1759720X11436240. PMC 3403247. PMID 22859929.
  2. Lacout, Alexis; Rousselin, Benoît; Pelage, Jean-Pierre (2008). "CT and MRI of Spine and Sacroiliac Involvement in Spondyloarthropathy". American Journal of Roentgenology. 191 (4): 1016–1023. doi:10.2214/AJR.07.3446. ISSN 0361-803X.
  3. Jang, Jennifer H.; Ward, Michael M.; Rucker, Adam N.; Reveille, John D.; Davis, John C.; Weisman, Michael H.; Learch, Thomas J. (2011). "Ankylosing Spondylitis: Patterns of Radiographic Involvement—A Re-examination of Accepted Principles in a Cohort of 769 Patients". Radiology. 258 (1): 192–198. doi:10.1148/radiol.10100426. ISSN 0033-8419.

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