Table 2.

SA, IH, and fusion and subsidence rates at various time points (Mean ± SD)

Parameters	n-HA/PA66 Cage (n = 159)	PEEK Cage (n = 178)	P
SA (°)
Pre-O	17.94 ± 8.49	16.91 ± 8.53	0.267
1-w Post-O	18.50 ± 6.09	18.54 ± 6.71	0.954
3-m Post-O	18.24 ± 6.00	18.10 ± 6.62	0.839
6-m Post-O	17.65 ± 5.64	17.47 ± 6.42	0.775
1-y Post-O	17.24 ± 5.66	16.91 ± 6.27	0.605
Fin-foll-up	16.82 ± 5.61	16.38 ± 6.11	0.495
Correction	0.55 ± 5.89	1.63 ± 4.91	0.072
Loss	1.68 ± 2.07	2.16 ± 2.26	0.044
IH (mm)
Pre-O	9.44 ± 2.16	9.28 ± 2.14	0.490
1-w Post-O	12.62 ± 1.58	12.51 ± 1.72	0.536
3-m Post-O	11.95 ± 1.48	11.70 ± 1.47	0.114
6-m Post-O	11.55 ± 1.41	11.32 ± 1.36	0.141
1-y Post-O	11.27 ± 1.32	11.07 ± 1.39	0.177
Fin-foll-up	10.97 ± 1.26	10.86 ± 1.37	0.453
Correction	3.18 ± 1.73	3.23 ± 1.72	0.791
Loss	1.65 ± 0.87	1.65 ± 0.97	0.966
Fusion rate (%)
1-y Post-O	139/159 (87.42 %)	155/178 (87.08 %)	0.925
Fin-foll-up	147/159 (92.45 %)	163/178 (91.57 %)	0.766
Subsidence rate (%)
3-m Post-O	6/159 (3.77 %)	4/178 (2.25 %)	0.526
6-m Post-O	9/159 (5.66 %)	6/178 (3.37 %)	0.309
1-y Post-O	11/159 (6.92 %)	10/178 (5.62 %)	0.622
Fin-foll-up	12/159 (7.55 %)	16/178 (8.99 %)	0.632

Pre-O pre-operation, Post-O post-operation, Fin-foll-up final follow-up