|
MRI (dominant wrist and fingers)
|
AM
|
non-AM
|
p value
|
|---|
|
Bone erosion score (PAMRIS)
|
53.0* (28 to 125)
|
15.0 (3 to 22)
|
0.004
|
|
MCPs bone erosion**
|
1.8 (0.4 to 16.3)
|
1.0 (0 to 4)
|
0.045
|
|
PIPs bone erosion
|
2.8 (0 to 20)
|
0.4 (0 to 3.4)
|
0.036
|
|
DIPs bone erosion
|
1.3 (0 to 8.8)
|
0.0 (0 to 3.4)
|
0.018
|
|
Bone oedema score (PAMRIS)
|
14.7 (8.3 to 19.5)
|
10.0 (2.0 to 12.5)
|
0.056
|
|
MCPs bone oedema
|
0.0 (0 to 3)
|
0.0 (0 to 2.3)
|
0.71
|
|
PIPs bone oedema
|
0.0 (0 to 3.8)
|
0.0 (0 to 1.5)
|
0.74
|
|
DIPs bone oedema
|
0.0 (0 to 4)
|
0.0 (0 to 2.8)
|
0.74
|
|
Bone proliferation score (PAMRIS)
|
3.6 (2.2 to 5.0)
|
0.7 (0.2 to 2.1)
|
0.003
|
|
MCPs bone proliferation
|
0.3 (0 to 1)
|
0.0 (0 to 0.8)
|
0.037
|
|
PIPs bone proliferation
|
0.3 (0 to 0.9)
|
0.0 (0 to 0.5)
|
0.13
|
|
DIPs bone proliferation
|
0.3 (0 to 0.6)
|
0.0 (0 to 1.0)
|
0.021
|
|
XR of hands and feet
| | | |
|
XR erosion score
|
89.8 (69.0 to 104.3)
|
21.0 (6.0 to 35.0)
|
0.001
|
|
XR narrowing
|
5.0 (57.0 to 108.3)
|
16.5 (4.5 to 28.0)
|
0.002
|
|
Sacroiliitis (No. %)
|
3 (27%)
|
6 (35%)
|
0.98
|
|
Bone densitometry
| | | |
|
T score L1 -4
|
0.7 (- 0.1 to 4.8)
|
-0.1 (-1.6 to 2.8)
|
0.13
|
|
T score total femur
|
-0.4 (-1.8 to 1.3)
|
-0.3 (-2.1 to 1.3)
|
0.88
|
- *Median + interquartile range shown
- **score per joint; median (range)
- AM = arthritis mutilans; DIP = distal interphalangeal; MCP = metacarpophalangeal; MRI = magnetic resonance imaging; non-AM = erosive psoriatic arthritis without bone lysis; PAMRIS = Psoriatic arthritis MRI scoring system; PIP = proximal interphalangeal; PsA = psoriatic arthritis; XR = plain radiography.
