Table 3.
Mean scores of the KOOS preoperatively to two years postoperatively
| Treatment period | Follow-ups | |||||||
| KOOS subscale (mean, SD) | Preop (N = 58) | 4 weeks (N = 49) | 7 weeks (N = 47) | 10 weeks (N = 47) | One week after extraction (N = 56) | 6 month (N = 51) | one year (N = 51) | two years (N = 52) |
| Pain | 41 | 51 | 59 | 62 | 71 | 74 | 75 | 80 |
| 17 | 22 | 22 | 20 | 21 | 20 | 20 | 20 | |
| Symptom | 50 | 55 | 61 | 63 | 68 | 74 | 75 | 80 |
| 18 | 19 | 19 | 19 | 19 | 20 | 20 | 20 | |
| Activities of daily life | 48 | 49 | 57 | 62 | 71 | 75 | 79 | 80 |
| 19 | 20 | 19 | 16 | 20 | 21 | 20 | 19 | |
| Sport and recreation function | 9 | 2 | 6 | 5 | 11 | 20 | 30 | 29 |
| 12 | 5 | 10 | 9 | 15 | 24 | 29 | 28 | |
| Knee related quality of life | 21 | 24 | 33 | 32 | 43 | 52 | 56 | 61 |
| 14 | 19 | 21 | 18 | 22 | 25 | 27 | 25 | |
KOOS = Knee injury and Osteoarthritis Outcome Score, 0–100 worst to best scale.