Table 1.
Mean values and ranges for all measured parameters on the pre-, intra- and postoperative images.
| Parameter | Preoperative radiograph | Intraoperative fluoroscopic imaging | Postoperative radiograph | Pre- to postoperative radiograph | Intraoperative fluoroscopy to postoperative radiograph | |
|---|---|---|---|---|---|---|
| Mean, range | Mean, range | Mean, range | Average correction | Observer 1* Average difference; ICC; 95% CI | Observer 2* Average difference; ICC; 95% CI | |
| LCEA | 17° (4°–32°) | 27.3° (13°–39°) | 28° (10°–39°) | 11° |
0.7° 0.935; 0.908–0.954 |
−1° 0.787; 0.672–0.862 |
| AI | 15° (0°–40°) | 2.8° (–12°–18°) | 3° (−12°–18°) | −12° |
0.2° 0.936; 0.912–0.953 |
1° 0.875; 0.807–0.919 |
| AWI | 0.39 (0.1–0.66) | 0.39 (0.14–0.57) | 0.33 (0.1–0.57) | −0.06 |
−0.06 0.725; 0.446–0.844 |
−0.03 0.675; 0.498–0.790 |
| PWI | 0.85 (0.29–1.23) | 1.04 (0.63–1.36) | 0.98 (0.6–1.3) | 0.14 |
−0.06 0.878; 0.697–0.937 |
−0,08 0.734; 0.467–0.853 |
The two columns on the right show the correlation of the intraoperative fluoroscopic images and the postoperative radiographs