Table 3

‚ÄÉComparison of inflammation observed on MRI with structural changes on conventional radiographs based on the modified New York criteria

Inflammation on MRIRadiographs of SI joint*Total
SacroiliitisNormal
*Radiographs of the sacroiliac joints were scored according to the modified New York criteria, which were met if bilateral grade 2 or unilateral grade 3 or 4 sacroiliitis was scored.
MRI, magnetic resonance imaging; SI, sacroiliac.
(a) Per joint analysis
Present221436
Absent1585100
Total3799136
(b) Per patient analysis
present in both SI joints9514
present in one SI joint358
Absent24446
Total145468