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Table 2 Comparison of radiological outcome according to surgical technique

From: Comparison of radiological and clinical outcomes of cervical laminoplasty versus lateral mass screw fixation in patients with ossification of the posterior longitudinal ligament

 

LMS

CL

P-Value

C0–C2 Cobb angle (°)

   

 Pre

 Post 12 m

 F/U

 Pre VS. Post 12 m

 Pre VS. F/U

18.19 ± 7.54

19.05 ± 7.36

21.00 ± 7.53

0.002*

<0.001*

19.72 ± 6.05

20.74 ± 7.36

21.77 ± 8.28

0.421

0.115

0.370

0.352

0.697

C2–C7 Cobb angle (°)

   

 Pre

 Post 12 m

 F/U

 Pre VS. Post 12 m

 Pre VS. F/U

14.03 ± 11.19

11.12 ± 10.33

9.86 ± 9.75

<0.001*

<0.001*

13.76 ± 7.51

12.66 ± 7.13

9.07 ± 7.86

0.013*

<0.001*

0.906

0.477

0.719

C2-C7 SVA (mm)

   

 Pre

 Post 12 m

 F/U

 Pre VS. Post 12 m

 Pre VS. F/U

25.14 ± 8.09

30.24 ± 7.84

35.23 ± 8.40

<0.001*

<0.001*

23.72 ± 7.49

27.02 ± 7.41

31.15 ± 8.25

<0.001*

<0.001*

0.461

0.089

0.050*

C7 slope(°)

   

 Pre

 Post 12 m

 F/U

 Pre VS. Post 12 m

 Pre VS. F/U

23.87 ± 7.41

25.40 ± 7.91

27.76 ± 7.90

<0.001*

<0.001*

21.89 ± 5.17

22.89 ± 5.19

23.39 ± 6.64

<0.001*

0.228

0.205

0.126

0.017*

T1 slope(°)

   

 Pre

 Post 12 m

 F/U

 Pre VS. Post 12 m

 Pre VS. F/U

27.13 ± 6.86

28.89 ± 7.00

31.43 ± 6.72

<0.001*

<0.001*

25.34 ± 4.30

26.84 ± 4.09

27.84 ± 5.13

<0.001*

0.014*

0.200

0.142

0.018*

SCA(°)

   

 Pre

 Post 12 m

 F/U

 Pre VS. Post 12 m

 Pre VS. F/U

76.69 ± 7.62

86.47 ± 7.68

94.92 ± 7.86

<0.001*

<0.001*

78.24 ± 5.95

84.74 ± 6.07

92.74 ± 6.07

<0.001*

<0.001*

0.392

0.307

0.214

  1. All data are expressed as mean ± SD unless otherwise noted
  2. Pre Preoperative, Post Postoperative, F/U Follow up, C2–7 SVA C2–7 sagittal vertical axis, Postop Postoperative, SCA Spino-cranial angle, m month, LMS Lateral mass screw fixation, CL Cervical laminoplasty
  3. *P < 0.05