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. Author manuscript; available in PMC: 2018 Sep 1.
Published in final edited form as: Tech Orthop. 2017 Sep 1;32(3):158–166. doi: 10.1097/BTO.0000000000000242

Table 2.

Microstructural Comparison of Human Bone and Porous PEEK

Porosity (%) Pore Size / Strut
Spacing (µm)		 Strut Thickness
(µm)		 Young’s Modulus
(GPa)* 		Yield Strength
(MPa)*
Human Cortical Bone26,40 3 – 12 - - 11.5 – 17.0 51 – 133
Solid PEEK34 - - - 3.4 98
Human Trabecular Bone41,42 74 – 92 638 – 854 122 – 194 0.3 – 3.2 2 – 17
Porous PEEK34,35,37 67 – 75 169 – 248 73 – 119 0.1 8 – 11
*

Young’s modulus and yield strength values are reported for compressive loading.