Table 3 Number of patients with abnormalities (inflammation, chronic changes or both) based on concordant observations by both readers
Abnormality | Number of patients with involvement of sacroiliac joints | |||
|---|---|---|---|---|
Only the left sacroiliac joint | Only the right sacroiliac joint | Both sacroiliac joints | One or two sacroiliac joints | |
Inflammation | 4 | 8 | 10 | 22 |
Structural changes (ankylosis, sclerosis, erosions) | 5 | 0 | 6 | 11 |
Inflammation as well as structural changes | 5 | 3 | 2 | 10 |
Inflammation | ||||
Bone marrow or subchondral bone | 4 | 9 | 8 | 21 |
Joint capsule | 0 | 2 | 4 | 6 |
Ligaments | 0 | 1 | 3 | 4 |
Joint space | 4 | 2 | 4 | 10 |