Abstract:Background:Longitudinal studies about the change from non-radiographic axial Spondyloarthritis (nr-axSpA) to r-axSpA (radiographic axial Spondyloarthritis) are scarce but show a 9-10% progression rate over 2 years (1-2) and a 24% progression rate over 10 years in another study (3). However, in early cohorts such as DESIR, this only represents a 5% over 5 years (4).Objectives:The aim of this study was to know the rate of progression from nr-axSpA to r-axSpA over 6 years in the early Esperanza cohort.Methods:Thi… Show more
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