Screws Fixation for Oblique Lateral Lumbar Interbody Fusion (OL-LIF): A Finite Element Study

Table 1

Parameters of the various tissues of the lumbar spine. [5].

Tissues	Modulus (MPa)	Poisson’s ratio	Element type	Thickness
Cortical bone	12000	0.3	Shell	1 mm
Cancellous bone	100	0.2	Solid	/
Bony endplate	12000	0.3	Shell	1 mm
Cartilaginous endplate	23.8	0.4	Shell	0.8 mm
Facet	35	0.4	Shell	0.2 mm
Titanium (Ti-6Al-4V)	110000	0.3	Solid	/
PEEK (polyetheretherketone)	3700	0.3	Solid	/