Nucleus Disc Replacement: Design and Material Selection FEA Analysis

Table 3

The vertebral endplates’ maximum contact pressures with the selected design nucleus replacement made of Bionate® 80 A, 90 A, and 55D.

Vertebral endplate contact pressures with nucleus replacement with Bionate®		80 A	90 A	55D
Maximum contact pressures 1000 N axial compression load	Smax (MPa)	0.719	0.98	1.09
Maximum contact pressures 1000 N axial compression load + 300 N anteroposterior shear	Smax (MPa)	1.159	1.614	1.935
Maximum contact pressures 1000 N axial compression load + 8 Nm flexion moment + 8 Nm rotation torque	Smax (MPa)	1.262	1.701	2.033