Table 1 Summary of demographics, ILAR criteria and result of MRI of the sacroiliac joint
TOTAL | ERA + | ERA | |
|---|---|---|---|
Female | 91 | 30 (33 %) | 61 (67 %) |
Male | 52 | 28 (54 %) | 24 (46 %) |
Arthritis | 55 | 42 (76 %) | 13 (24 %) |
Enthesitis | 48 | 43 (90 %) | 5 (10 %) |
SIjoint tenderness | 66 | 33 (50 %) | 33 (50 %) |
Inflammatory LBP | 62 | 36 (58 %) | 26 (42 %) |
HLA-B27 | 49 (33 ND) | 30 (61 %) (3 ND) | 19 (39 %) (30 ND) |
Onset male >6 | 30 | 24 (80 %) | 6 (20 %) |
Acute anterior uveitis | 7 | 3 (43 %) | 4 (57 %) |
History of AS, ERA, IBD related, ReA, AAU in first degree relative | 23 | 11 (48 %) | 12 (52 %) |
Sacroiliitis on MRI | 45 | 32 (71 %) | 13 (29 %) |
143 | 58 | 85 |