Skip to main content

Table 2 Summary of the material properties used in our finite element models

From: Biomechanical evaluation of three surgical scenarios of posterior lumbar interbody fusion by finite element analysis

Model Material model Material property    Literature
Bone Linear-elastic ρ = 1.067 * HU + 131 (g/cm3) 23
   E = 0.09882 ρ1.56 (MPa)  
Intervertebral disc   Mooney-Rivlin formulation (MPa)  
   c10 c01 D 1  
NUC Hyper-elastic 0.12 0.09 1 25
ANN   0.56 0.14 1 26
Ligaments   Ogden-3 formulation (MPa) 27, 28
ALL Hyper-elastic (See Table 3)  
SSL  
ISL  
PLL Hyper-elastic (See Table 3)  
LF  
IL Hyper-elastic (See Table 3)  
Facet Joint Linear-elastic Spring elements: E=250 (MPa) 29
   Modulus of Elasticity Poisson’s Ratio (μ)  
Graft bone Linear-elastic 100 (MPa) 0.2 10
AIB Linear-elastic 1500 (MPa) 0.3 24
PEEK Linear-elastic 3500 (MPa) 0.3 20
Titanium Linear-elastic 110 (GPa) 0.3 11
\