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Table 3 Segmental ROM of each group under different loading conditions

From: Biomechanical study of C1 posterior arch crossing screw and C2 lamina screw fixations for atlantoaxial joint instability

  

Flexion (°)

Extension (°)

Lateral bending (°)

Axial rotation (°)

Intact

C0-1

8.34

8.69

3.61

4.7

C1-2

11.2

7.33

5.17

28.34

C0-2

19.54

16.02

8.78

33.04

C1PS + C2PS

C0-1

4.3

3.77

3.4

5.4

C1-2

0.6

0

1.1

0.6

C0-2

4.87

3.77

4.35

5.82

ClPAS + C2PS

C0-1

5.1

4.4

2.8

4.6

C1-2

0

0.2

0.3

0.4

C0-2

5.1

4.64

3.05

4.9

ClPS + C2LS

C0-1

4.49

3.8

3.1

3.9

C1-2

0.2

0.3

0.2

0.3

C0-2

4.69

3.85

3.2

4.1