Preoperative and 12 month postoperative mean scores and (standard deviations) of the SF-36 subscales for radiographic moderate (grade 2) and severe (grade 3 ) osteoarthritis. The scale is 0–100, worst to best
| SF-36 subscale2-150 | Preop Grade 2 (n=47) | Diff2-150 | Postop Grade 2 (n=47) | Preop Grade 3 (n=113) | Diff | Postop Grade 3 (n=113) |
| PF | 34 (19.9) | +28 | 62 (23.8) | 29 (20.1) | +35 | 64 (22.9) |
| RP | 12 (21.4) | +48 | 60 (41.8) | 7 (20.4) | +44 | 51 (43.0) |
| BP | 31 (14.0) | +39 | 70 (25.5) | 30 (16.8) | +43 | 73 (24.6) |
| GH | 67 (20.6) | +4 | 71 (20.3) | 68 (19.1) | +1 | 69 (21.1) |
| VT | 51 (20.8) | +18 | 69 (24.2) | 47 (21.2) | +21 | 68 (21.1) |
| SF | 67 (24.5) | +17 | 84 (27.7) | 62 (26.2) | +25 | 87 (19.3) |
| RE | 40 (42.2) | +33 | 73 (38.7) | 32 (41.2) | +34 | 66 (40.4) |
| MH | 73 (17.2) | +6 | 79 (21.3) | 67 (21.0) | +14 | 81 (17.6) |
↵2-150 PF = physical function; RP = role function physical; BP = bodily pain; GH = general health; VT = vitality; SF = social function; RE = role function emotional; MH = mental health; Diff = difference between preoperative and 12 months' postoperative score.