TABLE 3.

Comparison of cage union rate at the final follow‐up between the two groups

Parameters	n‐HA/PA66 group	PEEK group	t / X 2	p value
Coronal
Upper endplate	74.6 ± 12.2	66.2 ± 10.8	4.282	0.000*
Lower endplate	75.6 ± 14.0	71.6 ± 8.8	2.518	0.027*
Sagittal
Upper endplate	79.2 ± 8.7	65.9 ± 12.6	6.024	0.000*
Lower endplate	88.0 ± 10.6	72.6 ± 11.7	5.112	0.000*

^*Statistical significance between two groups (p < 0.05).