[Retracted] Spinal Biomechanical Modelling in the Process of Lumbar Intervertebral Disc Herniation in Middle-Aged and Elderly

Table 2

Weighting factor distribution of spine biomechanics model.

Model index	Tissue site	Unit type	Number of units	Number of nodes	Elastic modulus (MPa)
1	Cortical bone	3D solid	1171	1427	11542
2	Cancellous bone	3D solid	1102	1305	721
3	Fiber tube	3D solid	342	537	5.91
4	Ligament	3D solid	132	327	3124
5	Endplate	2D planar	87	104	11.71