A Novel Spine Fixation System Made Entirely of Carbon-Fiber-Reinforced PEEK Composite: An In Vitro Mechanical Evaluation

Table 2

Fatigue axial compression bending test results of the CarboClear system.

Sample	Load (N)	Percentage of ultimate bending load (%)	No. of cycles to failure	Mode of failure
1	200	55	5 × 10^6	No failure, test terminated voluntarily
2	210	58	7.7 × 10^6	No failure, test terminated voluntarily
3	230	63	5 × 10^6	No failure, test terminated voluntarily
4	277	76	5 × 10^6	No failure, test terminated voluntarily
5	300	83	6 × 10^6	No failure, test terminated voluntarily
6	343	95	150	Slippage of the polyaxial screw head within the screw tulip