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Table 2 Changes of radiological parameters between preoperative period and final follow-up

From: Risk factors of instrumentation failure after laminectomy and posterior cervical fusions (PCF)

 

Hardware failure

No hardware failure

p-Value

C2-C7 CL (degree)

Mean ± SD

 

Pre-operative

13.5 ± 6.9

14.7 ± 6.5

0.545

Final follow-up

17.8 ± 6.2

18.5 ± 6.5

0.701

C2-C7 SVA (mm)

   

Pre-operative

23.8 ± 10.5

22.5 ± 8.9

0.641

Final follow-up

21.4 ± 14.3

19.8 ± 15.3

0.567

T1S (degree)

   

Pre-operative

23.8 ± 9.2

26.1 ± 9.0

0.436

Final follow-up

22.6 ± 13.6

24.5 ± 10.5

0.502

CL correction (degree)

4.3 ± 1.1

3.8 ± 1.2

0.196

  1. CL, cervical lordosis, SVA, sagittal vertical axis; T1S, T1 Slope; SD, standard deviation