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. Author manuscript; available in PMC: 2012 Dec 1.

Published in final edited form as: Bone. 2011 Sep 18;49(6):1279–1289. doi: 10.1016/j.bone.2011.09.042

Table 2.

Nanoindentation results summary

		Trabecular bone			Cortical bone

Group	N	E [GPa] ^*	H_c [GPa] ^†	H [GPa] ^§	E [GPa]	H_c [GPa]	H[GPa] ^§
YgN	20	15.6 (1.2)^a;¹	0.63 (0.07)^a;¹	2.18 (0.34)^a;¹	16.4 (2.2)^a;¹	0.63 (0.075)^a;¹	2.10 (0.3 l)^a,^b;¹
AMN	12	16.7 (0.7)^a,^b;¹,²	0.65 (0.05)^a;¹	2.17 (0.30)^a;¹	18.0 (2.2)^a;¹	0.64 (0.1 l)^a;¹	1.98 (0.41)^a;¹
OP	11^{^}	15.7 (1.3)^a;¹	0.64 (0.06)^a;¹	2.19 (0.31)^a;¹	16.3 (1.8)^a;¹	0.61 (0.052)^a;¹	1.98 (0.21)^a;¹
SSBT ^#	12
HFH	7	17.8 (1.8)^b;	0.76 (0.05)^b;	2.71 (0.24)^b	16.8 (0.7)^a;	0.70 (0.027)^a;	2.46 (0.24)^b
HFH and SMC	12	16.8 (2.3)²	0.74 (0.06)²	2.82 (0.40)²	16.4 (2.3)¹	0.69 (0.076)¹	2.42 (0.30)²

^*

E=elastic modulus

^†

H_c=contact hardness

^§

H=plastic deformation resistance

^{^}

N=10 for cortical bone measurements

Each cell reports mean value; standard deviation in parenthesis.

^#

top row values are from HFH biopsies only (n=7), bottom row values are from HFH and SMC biopsies, pooled (n=12)

^a

values that do not share alphabetic superscripts within a column are statistically different (p<0.05) for only HFH biopsies (n=50)

^b

values that do not share alphabetic superscripts within a column are statistically different (p<0.05) for only HFH biopsies (n=50)

¹

values that do not share numeric superscripts within a column are statistically different (p<0.05) for HFH and SMC biopsies (n=55)

²

values that do not share numeric superscripts within a column are statistically different (p<0.05) for HFH and SMC biopsies (n=55)