Enthesopathic abnormalities by group.
| Variables | HC, n = 60 | PsC, n = 66 p (PsC vs HC) | PsA, n = 50 p (PsA vs HC) p (PsA vs PsC) |
|---|---|---|---|
| MASEI score, median (IQ range) | |||
| Total score | 3.5 (7.5) | 6 (8) | 13 (14) |
| p = 0.02 | p < 0.0001 | ||
| p < 0.0001 | |||
| Inflammatory score | 1 (2) | 2 (4) | 6 (7) |
| p = 0.004 | p < 0.0001 | ||
| p < 0.0001 | |||
| Damage score | 3 (6) | 4 (6) | 8.5 (8) |
| p = 0.1 | p < 0.0001 | ||
| p = 0.0006 | |||
| Individual variables, frequency (%) | |||
| Power Doppler signal | 5 (8.3) | 12 (18.8) | 20 (40) |
| p = 0.10 | p < 0.0001 | ||
| p = 0.01 | |||
| Calcification | 43 (71.7) | 43 (84.3) | 56 (84.6) |
| p = 0.07 | p = 0.07 | ||
| p = 0.93 | |||
| Structural tendon abnormalities | 10 (16.7) | 18 (27.3) | 30 (58.8) |
| p = 0.15 | p < 0.0001 | ||
| p = 0.006 | |||
| Enthesis thickening | 24 (40) | 40 (60.6) | 43 (86) |
| p = 0.02 | p < 0.0001 | ||
| p = 0.005 | |||
| Bone erosions | 0 (0) | 4 (6.1) | 16 (32) |
| p = 0.052 | p < 0.0001 | ||
| p = 0.0003 | |||
| Bursitis | 17 (28.3) | 24 (36.4) | 24 (48) |
| p = 0.33 | p = 0.03 | ||
| p = 0.24 | |||
| Active enthesitis* | 29 (48.3) | 48 (72) | 45 (90) |
| p = 0.005 | p < 0.0001 | ||
| p < 0.0001 |
↵* Individuals who had at least 1 entheseal site with inflammatory findings (MASEI-inflammatory ≥ 1). MASEI: MAdrid Sonographic Enthesitis Index; IQ: interquartile; PsA: psoriatic arthritis; PsC: psoriasis alone; HC: healthy controls.