| Mean preoperative scorea (SD) | Mean preoperative scorea (SD) | Change in scoreb (SD) | 95 % CI | Comparison between time points (p value) |
---|---|---|---|---|---|
WOMAC | Â | Â | Â | Â | Â |
 Pain | 55.4 (19.2) | 10.5 (16.7) | - 44.9 (22.6) | - 42.1 to–47.6 | <0.001* |
 Stiffness | 57.1 (19.4) | 12.5 (18.1) | - 44.6 (25.1) | - 41.6 to–47.7 | <0.001* |
 Function | 53.2 (20.0) | 9.6 (15.3) | - 43.6 (21.9) | - 40.9 to–46.2 | <0.001* |
 Total score | 54.0 (18.7) | 10.1 (15.1) | - 43.9 (21.1) | - 41.4 to–46.5 | <0.001* |