TABLE 2.
Radiographic and fusion state between the two groups
| Parameters | n‐HA/PA66 group | PEEK group | t / X 2 | p value |
|---|---|---|---|---|
| Fusion rate (%) | ||||
| Local bone inside the cage | 95.3 (164/172) | 91.8 (157/171) | 1.786 | 0.181 |
| Local bone outside the cage | 92.4 (159/172) | 90.1 (154/171) | 0.610 | 0.435 |
| IH (mm) | ||||
| Preoperative | 9.1 ± 2.7 | 8.7 ± 2.8 | 0.591 | 0.556 |
| Postoperative | 12.7 ± 2.2* | 12.3 ± 2.5* | 1.016 | 0.312 |
| Final follow‐up | 11.4 ± 2.1*, # | 10.8 ± 2.3* , # | 1.584 | 0.116 |
| Correction | 3.7 ± 2.2 | 3.5 ± 1.8 | 0.358 | 0.721 |
| Loss | 1.3 ± 1.3 | 1.5 ± 1.4 | −0.791 | 0.431 |
| Final subsidence rate (%) | 10.5 (18/172) | 17.5 (30/171) | 3.570 | 0.059 |
| SA (°) | ||||
| Preoperative | 15.3 ± 8.0 | 15.4 ± 8.0 | −0.070 | 0.944 |
| Postoperative | 17.9 ± 8.5 | 17.7 ± 7.4 | 0.158 | 0.875 |
| Final follow‐up | 17.6 ± 8.2 | 17.3 ± 7.3 | 0.224 | 0.823 |
| Correction | 2.6 ± 3.6 | 2.3 ± 4.3 | 0.470 | 0.639 |
| Loss | −0.3 ± 1.5 | −0.4 ± 3.1 | 0.205 | 0.838 |
Abbreviations: IH, intervertebral space height; SA, segmental angle
#
p < 0.05 compared with post‐operation
*
p < 0.05 compared with pre‐operation.