From: Influence of fixed titanium plate position on the effectiveness of open-door laminoplasty for cervical spondylotic myelopathy
Group
n
C5 palsy
Axial symptoms
Yes
No
Severe
Moderate
Mild
Later mass group
55
8 (14.5%)
47 (85.5%)
2
11
42
Lamina group
43
1 (2.3%)
42 (97.7%)
4
15
24
Z/χ2 value
4.321
− 2.177
P value
0.038
0.029