Citation, DOI, disclosures and article data
Citation:
Gaillard F, Hng J, Kaya H, et al. Sacroiliitis grading (New York criteria). Reference article, Radiopaedia.org (Accessed on 17 Feb 2025) https://doi.org/10.53347/rID-2013
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.
Classification
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)
See also
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1. Bennett PH, Burch TA: Population Studies of the Rheumatic Diseases. Amsterdam, Excerpta Medica Foundation, 1968, pp 456-457
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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.
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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.
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