Skip to main content

Table 1 Material properties for the thoracolumbar spine finite element model

From: Biomechanics of artificial pedicle fixation in a 3D-printed prosthesis after total en bloc spondylectomy: a finite element analysis

Structure Young’s modulus (MPa) Poisson ratio Cross-sectional area (mm2)
Vertebrae
 Cancellous bone 100 0.2  
 Cortical bone 12,000 0.3  
 Posterior elements 3500 0.25  
Disc
 Annulus 4.2 0.45  
 Nucleus 0.2 0.49  
 Facet 11 0.2  
Ligaments
 Anterior longitudinal ligament 7   63.7
 Posterior longitudinal ligament 7   20
 Ligamentum flavum 3   40
 Intratransverse ligament 7   1.8
 Capsular ligament 4   30
 Interspinous ligament 6   40
 Supraspinous ligament 6.6   30
Pedicle screw and rod fixation 110,000 0.3  
3D-printed prosthesis 675 0.3