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

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

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
  1. 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
  2. CL C2–7 lordosis, SA segmental angle, SVA sagittal vertical axis, T1s T1 slope, T1s-CL T1 slope minus C2–7 lordosis