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Table 2 Material Property Designations of the Finite Element Model

From: Investigation into the biomechanics of lumbar spine micro-dynamic pedicle screw

Component E (MPa) ʋ Cross-Sectional Area(mm)
Cortical 12,000 0.3
Cancellous 100 0.2
Posterior 3500 0.25
Fibrosus 450 0.3
Pulposus 1 0.499
Endplate 23.8 0.4
Ligaments
ALL 7.8(ε < 0.12) 0.45 67.3
20(ε > 0.12)
PLL 10(ε < 0.11) 0.45 20
20(ε > 0.11)
FL 15(ε < 0.062) 0.45 40
19.5(ε > 0.062)
SSL 8(ε < 0.20) 0.45 30
15(ε > 0.20)
ISL 10(ε < 0.14) 0.45 40
11.6(ε > 0.14)
ITL 10(ε < 0.18) 0.45 18
58.7(ε > 0.18)
Implants
Titanium 110,000 0.33