Biomechanical Evaluation of a Novel Apatite-Wollastonite Ceramic Cage Design for Lumbar Interbody Fusion: A Finite Element Model Study

Table 4

Maximum stress values of the different cage designs. The stress values were significantly lower in the K2 design ().

	Flexion		Extension		Bending		Rotation
	Max.; stress value	Max.; stress point	Max.; stress value	Max.; stress point	Max.; stress value	Max.; stress point	Max.; stress value	Max.; stress point
K1	112.1	Anterior	61.6	Posterior	100.8	Anterolateral	72.3	Anterior
K2	32.6	Anterior	15.3	Posterior	33.7	Anterolateral	24.3	Anterior
K3	114.6	Anterior	68.4	Posterior	112.1	Anterolateral	80.6	Anterior
K4	46.3	Anterior	20.2	Anterior	48.6	Anterolateral	36.8	Anterior