Table 3. Ultrasonic features of joint, tendon, entheses and bursa changes/case (%).
| Features | Non-PsA | PsA |
|---|---|---|
| Features of joint changes | n=990 | n=942 |
| Joint effusion | 485 (48.99)# | 234 (24.84) |
| Joint synovial thickening | 447 (45.15) | 636 (67.51)* |
| Joint PD signal grades | ||
| 0 | 951 (96.06) | 734 (77.92)* |
| 1 | 29 (2.93) | 98 (10.40) |
| 2 | 10 (1.01) | 94 (9.98) |
| 3 | 0 (0.00) | 16 (1.70) |
| Joint osteophytes | 136 (13.74) | 101 (10.72) |
| Joint bone erosion | 48 (4.85) | 226 (23.99)* |
| Features of tendon changes | n=64 | n=116 |
| Tendon thickening | 1 (1.56) | 6 (5.17) |
| Tendon hypoechogenicity | 1 (1.56) | 6 (5.17) |
| Tendon PD signals | 1 (1.56) | 3 (2.59) |
| Tendon sheath effusion | 49 (76.56)# | 43 (37.07) |
| Tendon sheath synovial thickening | 20 (31.25) | 91 (78.45)* |
| Tendon sheaths PD signals | 9 (14.06) | 53 (45.69)* |
| Features of entheses changes | n=521 | n=267 |
| Entheses thickening | 186 (35.70) | 110 (41.20) |
| Entheses hypoechogenicity | 172 (33.01) | 105 (39.33) |
| Entheses calcifications | 41 (7.87) | 17 (6.37) |
| Enthesophytes | 418 (80.23)# | 174 (65.17) |
| Entheses bone erosions | 16 (3.07) | 41 (15.36)* |
| Entheses PD signals | 28 (5.37) | 44 (16.48)* |
| Features of bursa changes | n=70 | n=39 |
| Bursa effusion | 20 (28.57) | 12 (30.77) |
| Bursa synovial thickening | 55 (78.57) | 31 (79.49) |
| Bursa PD signals | 3 (4.29) | 6 (15.38) |
#, P<0.05 versus PsA group; *, P<0.05 versus non-PsA group. PsA, psoriatic arthritis; PD, power Doppler.