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Table 2 Material properties of components [5xiao, 10 zhang m 15faizan, 17 Vadapalli S, 18 Lin B, 19zhang World Neurology, 20zhang Biomed Mater, 21Zhang Z Comput Methods Biomech Biomed Engin 23zhong]

From: Biomechanical evaluation of autologous bone-cage in posterior lumbar interbody fusion: a finite element analysis

Element SetYoung’s modulus (MPa)Poisson’s Ratio (μ)
Cortical bone12,0000.3
Cancellous bone1000.2
Anulus4.20.45
Nucleus pulposus1.00.4999
Anterior longitudinal ligament15 
Posterior longitudinal ligament10 
Transverse ligament10 
Interspinous ligament10 
Supraspinous ligament8 
Ligamentum flavum15 
Capsular ligament7.5 
Cage (PEEK)36000.3
Cage (Titanium)110,0000.3
Cage (Autologous bone)50000.29
Pedicle screws (Titanium)110,0000.3
Rods (Titanium)110,0000.3
Bone graft19400.3