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Table 1 Material properties and element type used in the finite element models

From: Biomechanical analysis of a novel height-adjustable nano-hydroxyapatite/polyamide-66 vertebral body: a finite element study

ComponentElement typeYoung’s modulus (MPa)Poisson’s ratioCross-sectional area (mm2)
Cortical boneTetrahedral12,0000.3
Cancellous boneTetrahedral1000.2
PedicleTetrahedral35000.25
Facet jointsHexahedral150.45
EndplateHexahedral240.25
NPHexahedral10.49
AFHexahedral4.20.45
ALLTruss7.8/63.7
PLLTruss1/20
LFTruss1.5/40
CLTruss7.5/30
ITLTruss10/1.8
ISLTruss1/40
SSLTruss3/30
TMCTetrahedral110,0000.3 
AVBTetrahedral110,0000.3 
HAVBTetrahedral40000.3 
  1. NP nucleus pulposus, AF annulus fibrosus, ALL anterior longitudinal ligament, PLL posterior longitudinal ligament, LF ligamentum flavum, CL capsular ligament, ITL intertransverse ligament, ISL interspinous ligament, SSL supraspinous ligament, TMC titanium mesh cage, AVB artificial vertebral body, HAVB height-adjustable vertebral body