| WOMAC | KSS function score | VAS pain | ||||||
---|---|---|---|---|---|---|---|---|---|
 |  | Response |  | Response |  | Response | |||
 | Score (SD) | N | %a | Score (SD) | N | %a | Score (SD) | N | %a |
Preoperative | 52.5 (16.3) | 385 | 46 | 42.0 (22.1) | 435 | 54 | 64.2 (21.9) | 409 | 51 |
3Â months | 24.6 (16.2) | 454 | 57 | 57.2 (26.3) | 486 | 60 | 26.0 (23.5) | 485 | 61 |
6Â months | 21.9 (16.6) | 395 | 49 | 64.7 (27.0) | 424 | 53 | 21.3 (23.8) | 422 | 53 |
12Â months | 21.5 (18.2) | 450 | 56 | 67.0 (26.4) | 479 | 60 | 19.1 (23.4) | 473 | 59 |
Av. Responseb | Â | Â | 52 | Â | Â | 57 | Â | Â | 56 |