Inflammation on MRI in relation to tenderness at physical examination
MCP joints | |||||||||
---|---|---|---|---|---|---|---|---|---|
Synovitis score | Tenosynovitis score | Bone marrow oedema score | |||||||
(n=) | ≥1 (187) | ≥2 (40) | ≥3 (2) | ≥1 (145) | ≥2 (34) | ≥3 (2) | ≥1 (116) | ≥2 (43) | ≥3 (23) |
Percentage of tender joints with MRI feature | 51 | 15 | 1* | 42 | 9 | 1* | 36 | 15 | 8 |
Percentage of not tender joints with MRI feature | 19 | 3 | 0* | 15 | 4 | 0* | 11 | 4 | 2 |
Given MRI inflammation, % of non-tender joints | 56 | 40 | 0* | 54 | 56 | 0* | 49 | 44 | 43 |
Wrists | |||||||||
Synovitis score | Tenosynovitis score | Bone marrow oedema score | |||||||
(n=) | ≥1 (107) | ≥2 (39) | ≥3 (2) | ≥1 (92) | ≥2 (39) | ≥3 (6) | ≥1 (101) | ≥2 (53) | ≥3 (26) |
Percentage of tender joints with MRI feature | 88 | 42 | 2* | 83 | 41 | 5* | 76 | 59 | 31 |
Percentage of not tender joints with MRI feature | 46 | 22 | 1* | 37 | 13 | 3* | 50 | 17 | 7 |
Given MRI inflammation, % of non-tender joints | 51 | 46 | 50* | 48 | 38 | 50* | 56 | 36 | 31 |
MTP joints† | |||||||||
Synovitis score | Bone marrow oedema score | ||||||||
(n=) | ≥1 (63) | ≥2 (4) | ≥3 (0) | ≥1 (105) | ≥2 (49) | ≥3 (31) | |||
Percentage of tender joints with MRI feature | 13 | 1* | n.ap. | 20 | 13 | 9 | |||
Percentage of not tender joints with MRI feature | 6 | 0* | n.ap. | 10 | 4 | 2 | |||
Given MRI inflammation, % of non-tender joints | 59 | 50* | n.ap. | 62 | 49 | 45 |
*These frequencies should be interpreted with discretion, because of the low numbers of joints with these scores.
†It was not possible to score tenosynovitis of the MTPs, because here no right-angled (coronal planes) MR-images were available.
n.ap., not applicable because n=0.