#abst1012 #acr22 @rheumnow CASIPSA Study of SI CT in 48 PsA pts vs 48 controls. Disease duration 22.87 ± 14.95 y, 43.48 %HLA-B27+. higher prevalences of erosion in PsA (18%) preferentially located on the anterior and middle regions of the SIJs https://t.co/4dtJNCKf4I