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

Table 1

Static axial compression bending test results of the CarboClear system.

Sample	Bending yield load (N)	Bending ultimate load (N)	Bending stiffness (N/mm)	Displacement at 2% offset yield (mm)	Elastic displacement (mm)	Bending ultimate displacement (mm)
1	302	312	42	9.5	8.0	11.0
2	310	325	50	7.7	6.5	8.3
3	312	351	48	8.0	6.5	9.5
4	350	401	44	9.4	7.9	11.8
5	325	408	42	9.3	7.8	13.4
6	335	381	46	8.8	7.3	12.2
Mean ± SD	322 ± 18	363 ± 40	45 ± 3.2	8.8 ± 0.8	7.3 ± 0.7	11 ± 1.8