Radiographic parameters | Prior to cage insertion | Following cage insertion | Following posterior fixation |
---|---|---|---|
Disc height (mm) | |||
Open | 8.7 ± 1.7a | 11.9 ± 1.9 | 11.4 ± 2.4 |
Percutaneous | 7.3 ± 1.2a | 11.5 ± 1.3 | 12.5 ± 2.1 |
Total | 8.2 ± 1.6 | 11.8 ± 1.7 | 11.8 ± 2.3 |
Disc height-Anteriorb (mm) | |||
Open | 10.3 ± 2.3a | 13.9 ± 2.2 | 14.3 ± 2.2a |
Percutaneous | 8.4 ± 2.0a | 12.6 ± 1.5 | 12.3 ± 1.8a |
Total | 9.6 ± 2.3 | 13.4 ± 2.1 | 13.7 ± 2.3 |
Disc height-Posterior (mm) | |||
Open | 6.4 ± 2.1 | 9.2 ± 2.1 | 8.5 ± 2.0 |
Percutaneous | 5.5 ± 1.1 | 8.9 ± 2.1 | 8.2 ± 1.4 |
Total | 6.1 ± 1.9 | 9.1 ± 2.1 | 8.4 ± 1.8 |
Slip ratio (%) | |||
Open | 10.8 ± 4.4 | 8.3 ± 4.4 | 2.1 ± 3.7 |
Percutaneous | 11.6 ± 5.1 | 8.3 ± 4.7 | 2.2 ± 3.4 |
Total | 11.1 ± 4.6 | 8.3 ± 4.4 | 2.1 ± 3.6 |
Segmental lordosis (°) | |||
Open | 9.5 ± 3.5 | 8.7 ± 3.2 | 10.9 ± 3.8 |
Percutaneous | 7.1 ± 3.7 | 7.4 ± 2.5 | 10.4 ± 3.3 |
Total | 8.7 ± 3.7 | 8.3 ± 3.0 | 10.7 ± 3.6 |