Table 3.
Radiographic results
| Results | Pre-OA | Early stage | p value (95% CI) |
|---|---|---|---|
| Before surgery | |||
| CE angle (mean, degrees, SD) | 1.6 (7.5) | 0.4 (7.6) | 0.60 (0.48–1.7) |
| Acetabular roof angle (mean, degrees, SD) | 28 (7.2) | 28 (7.8) | 0.53 (0.47–1.6) |
| Head lateralization index (mean, SD) | 0.63 (0.07) | 0.65 (0.08) | 0.43 (0.45–1.5) |
| After surgery | |||
| CE angle | 32 (7.3) | 31 (7.0) | 0.63 (0.48–1.7) |
| p value (95% CI) in comparison between before and after surgery | 0.001 (−34 to −27) | 0.001 (−32 to −29) | |
| Acetabular roof | 1.4 (5.0) | 3.0 (7.0) | 0.38 (−3.8 to 1.4) |
| Angle | 0.001 (24–30) | 0.001 (24–27) | |
| Head lateralization | 0.58 (0.08) | 0.61 (0.10) | 0.11 (0.34–1.2) |
| Index | 0.001 (0.02–0.07) | 0.001 (0.02–0.05) | |
OA = osteoarthritis; CI = confidence interval; CE = center edge.