Skip to main content

Table 1 The demographic distribustion of cervical parameters in different Roussouly types before surgery

From: The relationship between changes of cervical sagittal alignment after anterior cervical discectomy and fusion and spino-pelvic sagittal alignment under roussouly classification: a four-year follow-up study

 

Total

Roussouly type I

Roussouly type II

Roussouly type III

Roussouly type IV

p

Age

51.84 ± 13.10

48.90 ± 10.22

54.05 ± 2.11

50.77 ± 17.92

55.69 ± 5.84

0.198

C0–C2 angle

20.42 ± 9.05

20.94 ± 9.23

20.42 ± 5.91

20.37 ± 10.51

19.93 ± 7.99

0.975

C2–C7 angle

9.61 ± 12.26

8.24 ± 8.66

7.90 ± 12.69

11.08 ± 13.83

9.42 ± 12.36

0.760

C0–C7 angle

29.89 ± 12.15

29.18 ± 9.06

28.32 ± 9.85

31.07 ± 14.11

29.35 ± 12.58

0.828

 EAM

5.74 ± 7.39

4.28 ± 6.04

5.19 ± 6.86

6.01 ± 8.00

7.34 ± 7.86

0.425

 SAIV

1.45 ± 3.64

1.92 ± 3.34

1.66 ± 2.55

1.31 ± 3.65

1.01 ± 4.81

0.797

 IAIV

4.24 ± 4.08

3.51 ± 7.20

5.92 ± 4.11

4.31 ± 2.70

2.66 ± 5.29

0.243

 Gender

      

 Male

66

15

11

28

12

 

 Female

67

14

10

29

14

 

 Op level

      

 ACDF 3–4

36

7

6

16

7

 

 ACDF 4–5

44

10

7

18

9

 

 ACDF 5–6

53

12

8

23

10

 
  1. The Student-Newman-Keuls method was used in the comparisons among Roussouly types
  2. Abbreviations: EAM external auditory meatus (EAM) tilt, SAIV superior adjacent inter-vertebral angle, IAIV inferior adjacent inter-vertebral angle
  3. P < 0.05 was defined as statistically significant