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Table 2 BoneXpert parameters in PsA patients stratified by Psoriatic Arthritis Ratingen Score Proliferation and Destruction Scores

From: Psoriatic arthritis is associated with bone loss of the metacarpals

Proliferation Score BHI MCI T-scoreMCI T W Destruction Score BHI MCI T-scoreMCI T W
0 (n = 34) 5.85 (0.42) 0.596 (0.052) −0.427 (0.927) 2.04 (0.26) 8.02 (1.05) 0 (n = 41) 5.88 (0.41) 0.600 (0.053) −0.346 (0.926) 2.07 (0.25) 8.02 (1.02)
1 (n = 28) 5.74 (0.43) 0.576 (0.051) −0.762 (0.911) 1.99 (0.25) 8.24 (1.05) 1 (n = 14) 5.73 (0.39) 0.575 (0.039) −0.805 (0.710) 1.99 (0.23) 8.23 (1.07)
2 (n =17) 5.32 (0.45) 0.531 (0.034) −1.611 (0.648) 1.81 (0.30) 8.37 (1.13) 2 (n =12) 5.44 (0.45) 0.551 (0.026) −1.281 (0.547) 1.84 (0.29) 8.06 (1.14)
3 (n = 14) 5.19 (0.47) 0.505 (0.041) −2.138 (0.819) 1.73 (0.26) 8.57 (0.84) 3 (n = 16) 5.17 (0.44) 0.513 (0.029) −1.981 (0.627) 1.73 (0.24) 8.32 (0.80)
4 (n = 11) 4.41 (0.52) 0.427 (0.045) −3.616 (0.838) 1.39 (0.23) 8.58 (1.20) 4 (n = 13) 5.10 (0.49) 0.494 (0.043) −2.300 (0.839) 1.72 (0.27) 8.78 (1.03)
5 (n = 8) 4.42 (0.75) 0.415 (0.051) −3.813 (1.035) 1.43 (0.39) 9.04 (1.20)
Absolute and relative changes between score 0 and score 4 −1.44
 − 24.6 %
−0.169
 − 28.3 %
3.189 −0.65
– 31.9 %
0.56
7.0 %
Absolute and relative changes between score 0 and score 5 −1.46
 − 24.8 %
−0.185
  30.8 %
3.467 −0.64
  30.9 %
1.02
12.7 %
Significance <0.01 <0.01 <0.01 <0.01 NS Significance <0.01 <0.01 <0.01 <0.01 NS
  1. Data presented as mean (standard deviation)
  2. BHI Bone Health Index, MCI Metacarpal Index, NS not significant, PsA psoriatic arthritis, T cortical thickness of the metacarpal bone, W width of the metacarpal bone