Summary of MRI imaging data in 17 children with ERA-JIA with abnormal MRI findings in the sacroiliac joint. Iliac and sacral sides are considered together. Data indicate numbers of patients.
Finding
Cartilaginous Portion
Ligamentous Portion
Both
Bone marrow edema
14
—
3
Bone enhancement
13
1
3
Enhancement in the joint space
7
—
1
Changes in joint space width (narrowing and/or widening)