Cervical sagittal alignment after Prestige LP cervical disc replacement: radiological results and clinical impacts from a single-center experience

Table 2 Effects of Cervical Disc Replacement on Cervical Sagittal Alignment Parameters

Variable	Preoperative	Postoperative	Last Follow-up	P value (Pre-post)	P^† value (Post-last)	P^# value (Pre-last)
CL (°)	8.9 ± 10.3	15.4 ± 9.0	12.5 ± 8.3	< 0.001	< 0.001	< 0.001
SA (°)	−3.3 ± 5.6	1.2 ± 4.8	−2.4 ± 5.0	< 0.001	< 0.001	0.047
SVA (mm)	16.6 ± 8.6	16.9 ± 7.7	16.7 ± 7.1	0.627	0.774	0.885
T1s (°)	24.8 ± 6.5	27.6 ± 6.8	22.3 ± 10.5	< 0.001	< 0.001	0.113
T1s-CL (°)	15.8 ± 8.6	12.2 ± 8.0	9.8 ± 12.2	< 0.001	0.256	< 0.001

Postoperative, within 1 week after surgery; P value, comparison between preoperative and postoperative values; P^† value, comparison between postoperative and the last follow-up values; P^# value, comparison between preoperative and the last follow-up values
CL C2–7 lordosis, SA segmental angle, SVA sagittal vertical axis, T1s T1 slope, T1s-CL T1 slope minus C2–7 lordosis

ISSN: 1471-2474