Table 2.

The effect of end-plate and early fusion on the change of IH.

	From T0 to T1	From T1 to T3
End-plate
Preservation	1.35±0.58	0.49±0.56
Removal	2.32±1.48	0.6±0.71
P-value	0.011	0.529
Fusion
Yes	1.36±0.85	0.42±0.3
No	1.99±1.29	0.59±0.71
P-value	0.046	0.246

T0 stands for the first postoperative day; T1 stands for 6 weeks after surgery; T3 stands for final follow-up. IH – interbody height.