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. Author manuscript; available in PMC: 2013 Aug 16.

Published in final edited form as: Acta Biomater. 2012 Sep 25;9(1):4806–4814. doi: 10.1016/j.actbio.2012.09.020

Table 1.

Comparison of the fracture behavior in the two directions of crack growth.

Parameter		Crack growth direction			p-value
Parameter		Transverse		Longitudinal	p-value
K₀ (MPa·m^0.5)		0.68 ± 0.16		0.67 ± 0.12	NS
K_g (MPa·m^0.5 mm⁻¹)		1.59 ± 0.23		2.48 ± 1.20	p ≤ 0.05
K_c (MPa·m^0.5)		1.67 ± 0.40		2.01 ± 0.21	p ≤ 0.01
	Outer		Inner
K₀ (MPa·m^0.5)	0.60 ± 0.14		0.81 ± 0.07		p ≤ 0.01
K_g (MPa·m^0.5 mm⁻¹)	1.37 ± 0.48		1.91 ± 0.26		p ≤ 0.05
K_c (MPa·m^0.5)	1.47 ± 0.35		1.96 ± 0.28		p ≤ 0.01