Table 2.
Preoperative and follow-up clinical data by gender
| Parameter | Female knees (N = 174) | Male knees (N = 86) | Total (N = 260) |
|---|---|---|---|
| Preoperative | |||
| KS pain (0–100) | 33.0 ± 19.8 | 36.4 ± 20.1 | 34.1 ± 19.9 |
| KS knee (0–100) | 42.3 ± 15.3 | 45.1 ± 16.7 | 43.2 ± 15.8 |
| KS function (0–100) | 62.1 ± 18.2a | 69.1 ± 15.7 | 64.4 ± 17.7 |
| KS total (0–100) | 52.2 ± 14.2a | 57.1 ± 13.2 | 53.8 ± 14.0 |
| ROM (°) | 107.2 ± 17.0 | 106.2 ± 23.9 | 106.9 ± 19.5 |
| Follow-up | |||
| KS pain (0–100) | 94.9 ± 12.3 | 95.2 ± 11.6 | 95.0 ± 12.1 |
| KS knee (0–100) | 93.6 ± 9.9 | 93.7 ± 9.8 | 93.7 ± 9.8 |
| KS function (0–100) | 85.7 ± 20.3a | 91.5 ± 16.4 | 87.6 ± 19.2 |
| KS total (0–100) | 89.7 ± 13.0 | 92.6 ± 10.9 | 90.6 ± 12.4 |
| ROM (°) | 116.3 ± 14.2 | 116.5 ± 13.6 | 116.4 ± 14.0 |
| Self-reported function | |||
| Excellent | 72 (41.4%)b | 52 (60.5%) | 124 (47.7%) |
| Good | 87 (50.0%)b | 26 (30.2%) | 113 (43.5%) |
| Fair | 13 (7.5%) | 7 (8.1%) | 20 (7.7%) |
| Poor | 2 (1.1%) | 1 (1.2%) | 3 (1.2%) |
KS knee society, ROM range of motion
a Lower than males (P < 0.05; Mann-Whitney U test)
b Different than males (P < 0.01; z-ratio)
All KS scores and ROM at follow-up were higher than pre-surgery (P < 0.05; Wilcoxon test)