Table 2.
Comparison of radiological outcomes
| Parameters | Non-PF OA group (n = 83) |
PF OA group (n = 83) |
p-Value |
|---|---|---|---|
| Mean mechanical axis (°) | |||
| Preoperative | 5.89 ± 2.85 | 6.05 ± 2.66 | 0.550 |
| Last follow-up | −0.96 ± 2.08 | −0.56 ± 3.15 | 0.393 |
| Correction angle | 6.85 ± 3.11 | 6.62 ± 3.65 | 0.376 |
| Mean weight-bearing line ratio | |||
| Preoperative | 0.23 ± 0.11 | 0.21 ± 0.12 | 0.379 |
| Last follow-up | 0.53 ± 0.10 | 0.53 ± 0.13 | 0.849 |
| Mean posterior tibial slope (°) | |||
| Preoperative | 9.83 ± 3.79 | 10.23 ± 3.39 | 0.307 |
| Last follow-up | 10.89 ± 4.16 | 11.12 ± 3.40 | 0.742 |
| ΔPTSA | 1.06 ± 3.46 | 0.88 ± 4.04 | 0.696 |
The p-values are of intergroup comparisons, with p < 0.05 indicating significance. PF OA patellofemoral osteoarthritis, correction angle difference in mechanical axis angle, ΔPTSA difference in posterior tibial slope angle