Skip to main content

Advertisement

Table 3 Frequency of MRI-detected lesions recorded concordantly by the majority of readers (at least four of seven) for each joint and per subjecta

From: Anterior chest wall inflammation by whole-body magnetic resonance imaging in patients with spondyloarthritis: lack of association between clinical and imaging findings in a cross-sectional study

Variables SpA group
(N= 122)
AS group
(N= 95)
nrSpA group
(N= 27)
Control group
(N= 75)
SClJ bone marrow edema 29 (23.8%) 26 (27.4%) 3 (11.1%) 1 (1.3%)
SClJ erosion 14 (11.5%) 13 (13.7%) 1 (3.7%) 2 (2.7%)
SClJ fat infiltration 13 (10.7%) 13 (13.7%) 0 (0%) 1 (1.3%)
SClJ synovitis 16 (13.1%) 13 (13.7%) 3 (11.1%) 1 (1.3%)
MSJ bone marrow edema 41 (33.6%) 35 (36.8%) 6 (22.2%) 6 (8.0%)
MSJ erosion 37 (30.3%) 31 (32.6%) 6 (22.2%) 7 (9.3%)
MSJ fat infiltration 25 (20.5%) 24 (25.3%) 1 (3.7%) 3 (4.0%)
MSJ fusion 14 (11.5%) 14 (14.7%) 0 (0%) 0 (0%)
SCoJ bone marrow edema 8 (6.6%) 8 (8.4%) 0 (0%) 0 (0%)
SCoJ erosion 0 (0%) 0 (0%) 0 (0%) 0 (0%)
SCoJ fat infiltration 4 (3.3%) 4 (4.2%) 0 (0%) 0 (0%)
ACW bone marrow edema (≥1 joint) 54 (44.3%) 47 (49.5%) 7 (25.9%) 7 (9.3%)
ACW erosion (≥1 joint) 42 (34.4%) 35 (36.8%) 7 (25.9%) 9 (12.0%)
ACW fat infiltration (≥1 joint) 33 (27.0%) 32 (33.7%) 1 (3.7%) 4 (5.3%)
ACW ≥1 of 5 lesionsb (≥1 joint) 72 (59.0%) 62 (65.3%) 10 (37.0%) 15 (20.0%)
  1. aACW = anterior chest wall; AS = ankylosing spondylitis; MSJ = manubriosternal joint; nrSpA = nonradiographic axial spondyloarthritis; SClJ = sternoclavicular joint; SCoJ = sternocostal joint; SpA = spondyloarthritis. bBone marrow edema ACW and/or erosion ACW, fat infiltration ACW, synovitis SClJ, fusion MSJ. The number of patients with MRI-detected lesions in the entire ACW may be lower than the addition of patients with MRI changes of the three joints SClJ, MSJ and SCoJ, because some patients showed inflammation in more than one joint. Values are the number of subjects (percentage).