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Table 1 Material and mechanical properties of the different parts used for the finite element model

From: Four lateral mass screw fixation techniques in lower cervical spine following laminectomy: a finite element analysis study of stress distribution

Components Young’s modulus (MPa) Poisson’s ratio
Cortical bone 10000.0 0.29
Cancellous bone 100.0 0.29
Endplate 500.0 0.40
Posterior structure 3500.0 0.29
Annulus fibrosus 3.4 0.40
Nucleus pulposus 1.0 0.49
Internal fixation devices (titanium alloy) 145000.0 0.30