Table 3.
Comparison of pre- and postoperative radiographic measurements and clinical evaluation. The FTA, HKA, and KLJO changed significantly in the valgus direction after surgery, and the tibial plafond inclination changed significantly in the medial direction (horizontal to the floor). Although the mean change in KJLO was approximately 0.16° greater than the tibial plafond inclination, no statistically significant difference was observed (∗; Wilcoxon signed rank test, P ≒ 0.88). There was no significant difference in pre-to postoperative changes in talar tilt. Postoperative KOOS was evaluated at 2 years after surgery. The pre-to post-operative KOOS was improved significantly.
| Parameter | Preoperative | Postoperative | Difference | P-value |
|---|---|---|---|---|
| FTA | 179.8 ± 2.8 | 170.6 ± 2.4 | 9.0 ± 2.1 | P＜0.01 |
| HKA | −4.8 ± 0.6 | 4.5 ± 1.3 | 8.5 ± 3.2 | P＜0.01 |
| KJLO | －0.5 ± 2.3 | 2.8 ± 2.8 | 3.2 ± 1.9 ※ |
P＜0.01 |
| TPI | 4.0 ± 2.9 | 1.0 ± 2.2 | 3.1 ± 2.5 ※ |
P＜0.01 |
| Talar tilt | 0.6 ± 0.7 | 0.9 ± 0.8 | 0.2 ± 0.6 | No significance |
| WBL ratio | 25.9 ± 11.7 | 60.8 ± 5.5 | 35.2 ± 6.2 | P＜0.01 |
| KOOS | 51.3 ± 6.3 | 82.6± | 31.3 ± 8.4 | P＜0.01 |
Abbreviations: FTA, femorotibial angle; HKA, hip-knee angle; KJLO, knee joint line obliquity.