Table 2 Comparison of the facet angle between CSS and control group

C2-C3^a

52.11 ± 7.8

51.68 ± 9.1

54.73 ± 6.1

53.54 ± 7.1

0.010

0.037

0.001

 < 0.001

C3-C4^a

50.49 ± 9.2

50.01 ± 7.9

56.08 ± 7.5

55.06 ± 7.8

0.025

0.313

0.001

 < 0.001

C4-C5^a

49.89 ± 7.5

47.80 ± 7.7

57.38 ± 6.4

55.93 ± 6.8

0.718

0.217

 < 0.001

 < 0.001

C5-C6^a

52.49 ± 8.4

51.08 ± 7.5

56.81 ± 6.7

56.19 ± 6.2

0.399

0.914

 < 0.001

 < 0.001

C6-C7^a

56.11 ± 8.8

56.12 ± 9.0

62.23 ± 7.6

62.34 ± 7.6

0.696

0.376

 < 0.001

 < 0.001