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Table 6 Comparison of cervical sagittal parameter changes

From: Influence of SCA on clinical outcomes and cervical alignment after laminoplasty in patients with multilevel cervical spondylotic myelopathy

  LG (n = 41) HG (n = 31) P value
SCA (°)
CA (°) (pre vs post) 5.93 ± 6.77 2.30 ± 5.73 0.019
CA (°) (pre vs F/U) 7.23 ± 6.40 3.02 ± 5.69 0.005
 Pre vs F/U < 0.001 0.006  
T1s (°)
T1s (°) (pre vs post) − 3.21 ± 4.51 − 0.15 ± 4.80 0.007
T1s (°) (pre vs F/U) − 2.81 ± 3.69 − 0.69 ± 3.99 0.028
 Pre vs F/U < 0.001 0.383  
CA (°)
CA (°) (pre vs post) − 2.43 ± 1.62 − 1.19 ± 2.46 0.005
CA (°) (pre vs F/U) − 3.43 ± 2.58 − 1.95 ± 2.93 0.017
 Pre vs F/U < 0.001 < 0.001  
cSVA (mm)
cSVA (mm) (Pre vs post) 5.57 ± 5.84 2.52 ± 6.89 0.055
cSVA (mm) (Pre vs F/U) 7.51 ± 8.03 3.61 ± 5.76 0.019
 Pre vs F/U < 0.001 0.002  
T1sCA (°)
T1sCA (°) (pre vs post) − 0.79 ± 4.73 1.05 ± 4.99 0.126
T1sCA (°) (pre vs F/U) 0.62 ± 4.44 1.25 ± 4.82 0.453
 Pre vs F/U 0.325 0.131  
  1. LG low SCA group, HG high SCA group, SCA spino-cranial angle, T1s T1-slope, CA C2–7 lordosis angle, cSVA C2–7 sagittal vertical axis, T1sCA T1s minus CA