Table 3.

Correlation of disc height increment with CSA and CSF and FD increment.

	% Ant disc height increment		% Post disc height increment
	Pearson correlation	p value	Pearson correlation	p value
CSA improvement rate (%); mean	0.1888	.0935	0.1943	.0841
CSF improvement rate (%); mean
Left	0.1619	.1513	0.2255	.0443
Right	0.1242	.2851	0.3589	.002
FD improvement rate (%); mean	0.0487	.6679	-0.1259	.266
FH improvement rate (%); mean	0.2706	.0334	0.2876	.0234

CSA, cross-sectional area of spinal canal (based on axial MR image); CSF, cross-sectional area of foramen (based on sagittal MR image); FD, facet distance (based on axial MR image); FH, foraminal height (based on sagittal radiographic image).