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Table 3 Number of patients with abnormalities (inflammation, chronic changes or both) based on concordant observations by both readers

From: Magnetic resonance imaging changes of sacroiliac joints in patients with recent-onset inflammatory back pain: inter-reader reliability and prevalence of abnormalities

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