Finite Element Analysis of Unilateral versus Bipedicular Bone-Filling Mesh Container for the Management of Osteoporotic Compression Fractures

Table 1

Material properties of the osteoporotic T12-L2 finite element model.

Material	Elastic modulus, (MPa)	Poisson ratio,	Stiffness coefficient	Status
Cortical bone	8040 (67% normal)	0.3	—	Osteoporotic
Cancellous bone	34 (34% normal)	0.2	—	Osteoporotic
Bony endplate	670 (67% normal)	0.4	—	Osteoporotic
Posterior structure	2345 (67% normal)	0.25	—	Osteoporotic
Annulus fibers	455	0.3	—	Normal
Nucleus pulposus	0.4	0.499	—	Normal
Facet cartilage	10	0.4	—	Normal
Anterior longitudinal	20	0.3	33.0	Normal
Posterior longitudinal	70	0.3	20.4	Normal
Interspinous	28	0.3	11.5	Normal
Supraspinous	28	0.8	23.7	Normal
Ligamentum flavum	50	0.3	27.2	Normal
Intertransverse	50	0.3	15.0	Normal
Bone cement (PMMA)	3000	0.4	—	Grafting