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Table 3 Cervical sagittal alignment parameters

From: Increased Neck Tilt/T1 slope ratio may play an important role in patients with cervical kyphosis

Item Preoperative Postoperative Follow-up p value p* value
T1s (°) 20.73 ± 8.31 21.45 ± 7.74 23.35 ± 5.00 0.081 0.352
NT (°) 47.35 ± 5.00 45.65 ± 10.07 46.08 ± 9.61 0.386 0.675
C2-7 Cobb (°) -5.93 ± 3.00 9.67 ± 6.61 7.91 ± 8.73 0.000 0.022
C2-7 SVA (cm) 1.41 ± 1.07 1.75 ± 0.71 1.43 ± 1.28 0.078 0.083
VAS 6.97 ± 0.85 3.03 ± 0.70 2.92 ± 0.69 0.000 0.487
NDI 18.53 ± 3.03 10.58 ± 2.63 10.11 ± 2.18 0.000 0.409
  1. Postoperative, within 1 week after surgery; Follow-up, at least 36 months after the surgery; p value, comparison between preoperative and postoperative values
  2. T1s T1 slope, NT neck tilt, C2-7 SVA C2-7 sagittal vertical axis, VAS visual analogue scale, NDI neck disability index
  3. *p value, comparison between postoperative and follow-up values