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Shows the association between KL grades 1, 2, 3, and total WOMAC scores.
| KL Grade | WOMAC Score (mean ± SD) | P value | |||
| 0 WEEK | 8 WEEKS | 24 WEEKS | 52 WEEKS | P < 0.05∗ | |
| 1 (n=18) | 43.55 ± 17.99 | 23.72 ± 17.24 | 16.61 ± 16.34 | 9.38 ± 13.31 | |
| 2 (n=21) | 50.81 ± 19.1 | 35.42 ± 18.15 | 26.95 ± 18.17 | 22.04 ± 18.84 | |
| 3 (n=11) | 66.81 ± 19.48 | 48 ± 21.06 | 43 ± 25.77 | 40.09 ± 28.85 | |
