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Table 4 Descriptive analysis of cervical alignment parameters in AIS patients pre- and post-operatively

From: Cervical spine alignment following surgery for adolescent idiopathic scoliosis (AIS): a pre-to-post analysis of 81 patients

 

Pre-OP

Post-OP

Change = Δ

Parameter

Min

Max

Mean

SD

Min

Max

Mean

SD

Min

Max

Mean

SD

T1Slope

81

−8.0

54.3

20.6

81

− 9.1

60.9

23.4

81

−18.6

21.9

2.8

C2-C7

75

−35.2

55.2

−1.7

75

−36.3

59.6

2.8

71

−23.8

53.6

5.5

C2-C7 SVA

75

−5.3

71.6

32.0

75

− 5.1

80.1

34.0

71

−35.6

39.5

2.4

C2-T3

75

−44.0

73.4

−5.3

75

−42.8

68.9

− 4.5

71

− 46.4

42.2

2.0

C2-T3 SVA

75

5.6

123.9

52.7

75

−2.7

165.6

59.2

71

−41.8

48.0

6.8

C2-T1 - H

72

−39.2

79.0

7.3

73

−34.7

78.6

12.4

66

−39.5

49.0

6.1

C2Slope

75

−14.0

47.5

21.9

75

−10.6

53.6

20.6

71

−42.7

34.0

−1.9

C0Slope

42

−16.9

15.9

−0.6

44

−30.8

20.3

−2.3

26

−25.9

8.25

−4.48

C2-C0

40

−6.2

35.4

22.4

44

−9.4

38.6

21.3

26

−20.3

8.63

−2.25

MGSlope

36

−9.3

18.6

4.278

41

−26.3

28.7

3.3

23

−25.8

7.46

−5.05

  1. C0S C0 Slope, C2S C2Slope, C2-C0angle; C2-C7 angle, C2-C7 SVA (SVA sagittal vertical axis), C2-T3 angle, C2-T3 SVA (SVA sagittal vertical axis), T1 Slope, MGS McGregor Slope (line), Δ parameter change pre- to post-operatively, SD standard deviation