Table 3.

Correlations of Endplate Morphology Parameters and Cage Positions to Cage Subsidence.

	Values	Pearson Coefficient (r value)
Cage Subsidence	/	1
Endplate concave angle
Inferior (°)	162.25±9.73	-0.197*
Superior (°)	164.16±13.92	-0.43**
Endplate concave Depth
Inferior (mm)	2.61±1.80	0.173
Superior (mm)	2.00±1.93	0.149
Anterior disc height
		Superior Endplate	Inferior Endplate
Pre-op (mm)	10.51±3.73	-0.48	-0.21*
Distraction rate	1.56±0.65	-0.12	0.27**
Posterior disc height
		Superior Endplate	Inferior Endplate
Pre-op (mm)	5.21±2.56	0.22	-0.15
Distraction rate	1.61±0.94	-0.52	0.26
Segmental Lordosis
		Superior Endplate	Inferior Endplate
Pre-op (°)	7.72±4.39	-0.74	-0.76
Correction rate	2.06±2.31	0.42	-0.32
Distance to Anterior (mm)	15.61±7.60	0.10	0.26**
Distance to Posterior (mm)	14.88±0.60	0.71	0.14

*:P < 0.05; **:P < 0.01.