From: Risk factors for joint replacement in knee osteoarthritis; a 15-year follow-up study
Total | Knee replacement | Unadjusted | Adjusteda | ||||
---|---|---|---|---|---|---|---|
Variable | (n = 100) | Yes (n = 66) | No (n = 34) | OR (95% CI) | p value | OR (95% CI) | p value |
Female, % (no.) | 64% (64) | 68% (45) | 56% (19) | 1.0 (0.9 – 1.0) | 0.52 | ||
Age (years), mean (SD) | 62.0 (10.4) | 61.3 (10.0) | 63.4 (10.9) | 1.0 (0.9 – 1.0) | 0.34 | ||
BMI grade, mean (SD) | 2.2 (0.9) | 2.2 (0.9) | 2.0 (0.9) | 1.2 (0.8 – 2.0) | 0.41 | ||
WOMAC, mean (SD): | |||||||
- Pain | 184 (89) | 196 (95) | 161 (71) | 1.0 (1.0 – 1.0) | 0.07 | ||
- Stiffness | 81 (45) | 87(46) | 67 (40) | 1.3 (1.01 – 1.6)c | 0.04 | 1.3 (1.01 – 1.7)c | 0.04 |
- Function | 657 (319) | 692 (332) | 588 (281) | 1.0 (1.0 – 1.0) | 0.13 | ||
- Total | 922 (427) | 976 (446) | 817 (366) | 1.0 (1.0 – 1.0) | 0.08 | ||
Hyalgan %, (no.) | 48% (48) | 50% (33) | 44% (15) | 1.3 (0.6 – 2.9) | 0.58 | ||
JSN grade, mean (SD) | 1.7 (1.0) | 2.0 (0.9) | 1.0 (0.8) | 3.6 (2.1 - 6.2) | <0.001 | 5.0 (2.6 - 9.9) | <0.001 |
Radiological sum score, mean (SD) | 5.0 (2.6) | 5.8 (2.3) | 3.4 (2.5) | 1.5 (1.3 - 1.9) | <0.001 | 1.7 (1.3 - 2.1) | <0.001 |
BML grade, mean (SD)b, d | 2.1 (1.4) | 2.4 (1.5) | 1.4 (0.9) | 2.1 (1.2 – 3.7) | 0.006 | 2.3 (1.3 – 4.0) | 0.005 |
Synovitis grade, mean (SD)b, e | 2.6 (1.0) | 2.9 (0.9) | 2.0 (1.1) | 2.7 (1.5 – 4.7) | 0.001 | 2.8 (1.5 – 5.2) | 0.001 |
Effusion grade, mean (SD)b, f | 2.4 (1.5) | 2.7 (1.6) | 1.7 (1.1) | 1.9 (1.2 – 3.0) | 0.005 | 1.9 (1.2 – 3.1) | 0.006 |