Sacroiliitis grading (New York criteria)
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At the time the article was created Frank Gaillard had no recorded disclosures.View Frank Gaillard's current disclosures
At the time the article was last revised Joel Hng had no financial relationships to ineligible companies to disclose.View Joel Hng's current disclosures
Sacroiliitis grading can be achieved using plain radiographs according to the New York criteria 1,2. A patient is considered positive for radiographic sacroiliitis if the score is greater than or equal to grade II bilaterally or greater than or equal to grade III unilaterally 3.
grade 0: normal
grade I: suspicious changes (some blurring of the joint margins)
grade II: minimum abnormality (small localized areas with erosion or sclerosis, with no alteration in the joint width)
grade III: unequivocal abnormality (moderate or advanced sacroiliitis with erosions, evidence of sclerosis, widening, narrowing, or partial ankylosis)
grade IV: severe abnormality (complete ankylosis)
- 1. Bennett PH, Burch TA: Population Studies of the Rheumatic Diseases. Amsterdam, Excerpta Medica Foundation, 1968, pp 456-457
- 2. van der Linden S, Valkenburg HA, Cats A. Evaluation of diagnostic criteria for ankylosing spondylitis. A proposal for modification of the New York criteria. Arthritis Rheum 1984;27:361–8.
- 3. Sieper J, Rudwaleit M, Baraliakos X, et al. The Assessment of SpondyloArthritis international Society (ASAS) handbook: a guide to assess spondyloarthritis. Ann Rheum Dis 2009; 68 Suppl 2:ii1.