From: Factors affecting titanium mesh cage subsidence in single-level anterior cervical corpectomy and fusion for ossification of the posterior longitudinal ligament
Group S
Group N
P value
L (mm)
31.5 ± 4.5
27.5 ± 3.9
< 0.01
Degree of distraction (%)
11.4 ± 7.6
4.7 ± 9.7
α (°)
5.7 ± 2.7
1.4 ± 4.7
SPD (mm)
7.0 ± 4.2
4.1 ± 2.7