Table 3 Association of knee synovial abnormalities on ultrasound and Kellgren-Lawrence grades
Synovial abnormalities | Kellgren-Lawrence grades | |||
|---|---|---|---|---|
< 2 | 2 | 3 | 4 | |
Synovial hypertrophy | ||||
No, n (%) | 4979 (74.9) | 1179 (17.7) | 363 (5.5) | 125 (1.9) |
Yes, n (%) | 343 (41.2) | 247 (29.6) | 155 (18.6) | 88 (10.6) |
Crude OR (95% CI) | 1.00 (reference) | 3.04 (2.52, 3.67) | 6.20 (4.90, 7.83) | 10.22 (7.40, 14.11) |
Adjusted OR (95% CI)a | 1.00 (reference) | 2.98 (2.43, 3.65) | 6.07 (4.69, 7.86) | 9.69 (6.82, 13.76) |
Joint effusion | ||||
No, n (%) | 3829 (76.0) | 855 (17.0) | 261 (5.2) | 94 (1.8) |
Yes, n (%) | 1493 (61.2) | 571 (23.4) | 257 (10.5) | 119 (4.9) |
Crude OR (95% CI) | 1.00 (reference) | 1.71 (1.50, 1.96) | 2.53 (2.08, 3.07) | 3.25 (2.36, 4.46) |
Adjusted OR (95% CI)a | 1.00 (reference) | 1.75 (1.51, 2.03) | 2.53 (2.04, 3.14) | 3.15 (2.23, 4.44) |
Power Doppler signal | ||||
No, n (%) | 5269 (72.5) | 1372 (18.9) | 456 (6.3) | 169 (2.3) |
Yes, n (%) | 53 (24.9) | 54 (25.3) | 62 (29.1) | 44 (20.7) |
Crude OR (95% CI)a | 1.00 (reference) | 3.91 (2.64, 5.80) | 13.52 (9.07, 20.15) | 25.88 (16.34, 40.99) |
Adjusted OR (95% CI)a | 1.00 (reference) | 3.46 (2.27, 5.29) | 11.64 (7.45, 18.19) | 20.93 (12.30, 35.61) |