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Table 1 The ROM of C4/5 in different directions of two groups

From: Biomechanical analysis of the door-shaped titanium plate in single-level anterior cervical discectomy and fusion

Direction of movement

Control group

Study group

Pre-fixation

Post-fixation

After torsion

Pre-fixation

Post-fixation

After torsion

Flexion

10.73 ± 0.82

1.35 ± 0.33

1.40 ± 0.33

10.73 ± 1.58

1.28 ± 0.12

1.32 ± 0.13

Extension

7.43 ± 0.80

1.37 ± 0.30

1.43 ± 0.31

7.21 ± 0.88

1.31 ± 0.32

1.36 ± 0.31

Left lateral bending

14.52 ± 1.80

1.33 ± 0.29

1.38 ± 0.29

14.74 ± 1.84

1.24 ± 0.15

1.29 ± 0.15

Right lateral bending

14.13 ± 1.85

1.33 ± 0.31

1.39 ± 0.34

14.78 ± 1.91

1.29 ± 0.44

1.35 ± 0.44

Left axial

rotation

1.73 ± 0.13

0.97 ± 0.41

1.01 ± 0.42

1.71 ± 0.27

0.93 ± 0.21

0.97 ± 0.22

Right axial

rotation

1.77 ± 0.11

0.99 ± 0.3

1.04 ± 0.29

1.74 ± 0.10

0.95 ± 0.27

0.99 ± 0.25