The clinical efficacy of hybrid surgery based on the Waveflex semi-rigid dynamic internal fixation system for the treatment of lumbar degenerative diseases: over three-year follow-up study

Table 3 Disc height of non-fusion segment

	Preoperative	Final follow-up	t-test
	Preoperative	Final follow-up	t-values	P-values
Anterior disc height, ADH (x ± s, cm)	1.38 ± 0.36	1.29 ± 0.28^#	1.845	0.075
Middle disc height, MDH (x ± s, cm)	0.99 ± 0.31	0.96 ± 0.36^#	0.629	0.534
Postefior disc height, PDH (x ± s, cm)	0.66 ± 0.22	0.66 ± 0.20^#	-0.105	0.917

ISSN: 1471-2474