Radiographic parameters from pre- to postoperative by implant type.
| Radiological Parameters | TTN, median (IQR) | % Change | TCPEEK, median (IQR) | % Change | P |
| Cervical Lordosis (°) | |||||
| Preoperative | 14.0 (5.6; 23.3) | 14.9 (7.1; 19.4) | 0.94 | ||
| Postoperative | 15.3 (7.8; 27.4) | 16.0 (9.6; 26.1) | 0.70 | ||
| Change | 2 (0.3; 4.4) | +14.3 | 2.3 (0; 5.8) | +15.4 | 0.49 |
| Segmental Lordosis (°) | |||||
| Preoperative | 1.6 (1.2; 2.4) | 1.8 (-0.6; 3.4) | 0.72 | ||
| Postoperative | 2.2 (1.8; 3.4) | 2.8 (0.7; 6.3) | 0.92 | ||
| Change | 0.6 (0.4; 1.1) | +37.5 | 1.4 (0.3; 2.9) | +77.8 | 0.10 |
| C2-C7 SVA, mm | |||||
| Preoperative | 29.4 (15.2; 31.5) | 26.3 (17.7; 30) | 0.83 | ||
| Postoperative | 25 (20.1; 31.5) | 29.1 (21.5; 33.3) | 0.19 | ||
| Change | 3.8 (-3.2; 9.2) | +12.9 | 2.7 (-2; 6.6) | +10.3 | 0.77 |
| Disc Height Operated Level, mm | |||||
| Preoperative | 3.3 (2.0; 4.1) | 3.2 (2.5; 3.8) | 0.90 | ||
| Postoperative | 5.2 (4.0; 5.8) | 5.8 (4.6; 6.6) | 0.18 | ||
| Change | 1.4 (0.2; 3.3) | +42.4 | 2.4 (1.3; 3.2) | +75.0 | 0.90 |
| Disc Height Adjacent Level Above, mm | |||||
| Preoperative | 4.8 (3.6; 5.1) | 3.9 (3.4; 4.3) | 0.04 | ||
| Postoperative | 4.5 (3.4; 5.1) | 3.7 (3.3; 4.3) | 0.03 | ||
| Change | -0.1 (-0.3; 0.0) | -2.1 | -0.1 (-0.3; 0.0) | -2.6 | 0.70 |
| Disc Height Adjacent Level Below, mm | |||||
| Preoperative | 4.2 (2.9; 5.9) | 4.3 (3.5; 4.9) | 0.80 | ||
| Postoperative | 4.1 (2.8; 5.6) | 4.3 (3.5; 4.9) | 0.69 | ||
| Change | -0.1 (-0.3; 0) | -2.4 | -0.1 (-0.2; 0) | -2.3 | 0.87 |
Abbreviations: IQR, interquartile range; SVA, sagittal vertical axis; TCPEEK, Titanium-coated polyether-ether-ketone; TTN, Titanium.
Level of significance p<0.05