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Table 2 Sagittal ROM of C 2-7 , implanted level and adjacent levels

From: Comparisons of three anterior cervical surgeries in treating cervical spondylotic myelopathy

 

Group A

Group B

Group C

C2–7 ROM

   

Pre-op

49.92 ± 8.17

49.13 ± 8.04

49.18 ± 7.82

Post-op

41.08 ± 4.74

44.73 ± 6.90

48.59 ± 6.80

P value

< 0.001

< 0.001

0.091

Implanted level ROM

   

Pre-op

8.88 ± 1.33

9.20 ± 1.26

8.91 ± 1.48

Post-op

0

7.13 ± 1.19

8.59 ± 1.68

P value

< 0.001

< 0.001

0.216

Upper level ROM

   

Pre-op

8.83 ± 1.83

8.87 ± 1.46

9.05 ± 1.86

Post-op

10.75 ± 1.82

9.33 ± 2.72

9.23 ± 2.52

P value

< 0.001

0.543

0.728

Lower level ROM

   

Pre-op

9.04 ± 1.46

8.93 ± 1.90

9.27 ± 1.75

Post-op

11.08 ± 1.56

9.80 ± 2.51

9.45 ± 2.22

P value

< 0.001

0.138

0.683

  1. Means ± standard deviation.