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Table 1 Material properties of all components

From: A lattice topology optimization of cervical interbody fusion cage and finite element comparison with ZK60 and Ti-6Al-4V cages

Component Density (kg/m3) Young’s Modulus Poisson’s Ratio Stiffness (N/mm) Type
Cortical bone 1830 12,000 0.29   Solid
Cancellous bone 1000 450 0.29   Solid
Endplate 1830 1000 0.4   Solid
Nucleus 1000 3.4 0.49   Solid
Annulus fibrosus 1200 4.2 0.4   Solid
ZK60 1835 44,660 0.305   Solid
Ti-6Al-4V 4429 113,800 0.339   Solid
Facet joint 1000 10 0.3   Solid
Ligament
 ALL 1100 15 0.3 16 Spring
 PLL 1100 10 0.3 25 Spring
 CL 1100 4 0.3 19 Spring
 ISL 1100 4 0.3 7 Spring
 LF 1100 5 0.3 25 Spring
  1. ALL Anterior longitudinal ligament, CL Cervical ligament, FL Flaval ligament, ISL Interspinous ligament, PLL Posterior longitudinal ligament