Table 3 Comparison of clinical and patient-reported outcomes between SV and MV subgroups in more and less osteophytes groups. Varus defined by FTA
|  |  | More osteophytes (n = 47) | Less osteophytes (n = 63) | ||||
|---|---|---|---|---|---|---|---|
|  |  | SV (n = 23) | MV (n = 24) | p-value | SV (n = 16) | MV (n = 47) | p-value |
ROM | preoperative (degree) | 97.0 ± 22.9 | 107.3 ± 20.0 | 0.11 | 114.1 ± 20.2 | 115.5 ± 19.5 | 0.8 |
|  | postoperative (degree) | 120.7 ± 15.8 | 122.5 ± 10.9 | 0.65 | 123.4 ± 11.1 | 122.0 ± 12.9 | 0.67 |
|  | angle difference (degree) | 23.7 ± 20.1 | 14.8 ± 15.9 | 0.1 | 9.4 ± 13.9 | 6.0 ± 20.1 | 0.46 |
KS | preoperative | 37.4 ± 15.4 | 43 ± 12.0 | 0.18 | 43.5 ± 13.6 | 51.4 ± 13.9 | 0.08 |
|  | postoperative | 96.3 ± 6.0 | 97.0 ± 4.1 | 0.61 | 97.7 ± 3.2 | 96.2 ± 5.2 | 0.19 |
|  | improvement rate (%) | 94.3 ± 9.6 | 94.9 ± 6.66 | 0.81 | 95.7 ± 4.77 | 87.9 ± 22.0 | 0.03* |
FS | preoperative | 39.1 ± 18.1 | 40.9 ± 18.1 | 0.74 | 40.4 ± 14.8 | 43.7 ± 19.8 | 0.52 |
|  | postoperative | 79.6 ± 13.2 | 73.3 ± 22.3 | 0.25 | 79.4 ± 16.2 | 76.2 ± 17.7 | 0.49 |
|  | improvement rate (%) | 67.8 ± 19.9 | 58.1 ± 28.0 | 0.19 | 70.7 ± 24.1 | 53.9 ± 33.5 | 0.05 |
KOOS- | preoperative | 42.5 ± 22.0 | 47.4 ± 18.7 | 0.42 | 46.6 ± 21.2 | 48.6 ± 16.6 | 0.75 |
Symptom | postoperative | 83.8 ± 14.7 | 78.1 ± 15.4 | 0.21 | 83.8 ± 11.6 | 79.0 ± 17.0 | 0.23 |
|  | improvement rate (%) | 72.3 ± 21.4 | 57.1 ± 32.6 | 0.07 | 67.7 ± 19.2 | 53.9 ± 36.6 | 0.07 |
KOOS- | preoperative | 42.4 ± 19.3 | 43.4 ± 18.8 | 0.85 | 42.7 ± 18.1 | 39.1 ± 17.8 | 0.52 |
Pain | postoperative | 89.2 ± 12.0 | 85.8 ± 15.7 | 0.41 | 92.3 ± 7.2 | 83.8 ± 14.0 | 0.003* |
|  | improvement rate (%) | 81.3 ± 18.2 | 76.6 ± 27.7 | 0.51 | 84.7 ± 14.7 | 70.3 ± 25.6 | 0.01* |
KOOS- | preoperative | 60.3 ± 14.6 | 59.3 ± 18.6 | 0.84 | 61.3 ± 13.2 | 59.2 ± 19.2 | 0.64 |
ADL | postoperative | 89.8 ± 9.9 | 81.9 ± 16.3 | 0.06 | 90.4 ± 7.1 | 84.8 ± 12.2 | 0.03* |
|  | improvement rate (%) | 75.4 ± 22.0 | 54.3 ± 34.1 | 0.02* | 75.5 ± 13.2 | 57.4 ± 34.9 | 0.005* |
KOOS- | preoperative | 24.9 ± 14.0 | 26.9 ± 17.0 | 0.67 | 21.4 ± 12.9 | 28.1 ± 14.9 | 0.11 |
QOL | postoperative | 74.0 ± 20.3 | 58.4 ± 25.2 | 0.03* | 67.4 ± 18.9 | 64.1 ± 21.0 | 0.56 |
|  | improvement rate (%) | 66.4 ± 25.0 | 45.7 ± 28.1 | 0.01* | 61.6 ± 20.8 | 48.1 ± 28.8 | 0.06 |