Preoperative and 3.6 year postoperative mean scores and (standard deviations) for the three WOMAC subscales, for the patients, mean age 71 (50–88), and for the reference group, mean age 71 (52–86). The scale is 0–100, worst to best.
| Subscale | Patients preoperative (n=92) | Patients 3.6 years postoperative (n=198) | Reference group at baseline (n=83) | Reference group 3.6 years after baseline (n=83) |
|---|---|---|---|---|
| WOMAC pain | 45 (17.2) | 82 (20.3) | 88 (17.7) | 87 (19.8) |
| WOMAC stiffness | 39 (16.3) | 78 (22.2) | 88 (18.6) | 84 (20.6) |
| WOMAC function | 38 (14.8) | 74 (21.7) | 87 (18.9) | 84 (21.8) |