ASAS Categorization Criteria for Spondyloarthritis

Assessment in SpondyloArthritis international Society (ASAS) criteria were validated in an international cohort trial with a sensibility and specificity close to 82.9 and 84.4%, respectively. Continue reading

The European Spondyloarthropathy Study Group (ESSG) Classification for Spondyloarthropathy (SpA)

According to the ESSG criteria, for a patient to be classified as having SpA, he or she has to satisfy one of two entry criteria: Inflammatory spinal pain OR synovitis that is either asymmetric or predominantly in the lower limbs. Continue reading