Table 3 Comparison of radiologic and clinical parameters according to preoperative facet degeneration

T1s (°)

 Pre

25.39 ± 5.30

25.86 ± 6.30

0.634

 F/U

25.80 ± 5.61

26.67 ± 6.35

0.401

△T1s (°)

0.46 ± 3.00

0.81 ± 3.25

0.516

 Pre vs F/U

0.173

0.094

cSVA (mm)

 Pre

18.19 ± 6.19

17.77 ± 7.19

0.718

 F/U

23.44 ± 6.96

21.94 ± 7.89

0.237

△cSVA (mm)

5.26 ± 6.05

4.16 ± 6.23

0.307

Pre vs F/U

 < 0.001

 < 0.001

SCA (°)

 Pre

82.21 ± 10.63

81.05 ± 5.81

0.298

 F/U

78.38 ± 9.36

78.27 ± 7.16

0.798

△SCA (°)

− 3.83 ± 5.30

− 2.78 ± 4.08

0.067

 Pre vs F/U

 < 0.001

 < 0.001