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. Author manuscript; available in PMC: 2012 Oct 13.
Published in final edited form as: J Biomech. 2011 Aug 31;44(15):2659–2666. doi: 10.1016/j.jbiomech.2011.08.006

Table 1.

Architectural Characteristics of Trabecular Bone Samples by Age Group

All Samples Microdamage-Assessed
Samples
Parameter Younger Older Younger Older
Bone Volume Fraction 0.27 0.02 0.23 0.01 0.25 0.02 0.23 0.02
Connectivity Density 8.26 0.64 7.09 0.56 7.71 0.63 6.85 0.68
Structural Model Index 0.29 0.20 0.63 0.11 0.52 0.17 0.63 0.16
Trabecular Number (mm−1) 1.60 0.07 1.46 0.05 1.56 0.07 1.43 0.06
Trabecular Thickness (mm) 0.18 0.01 0.18 0.01 0.17 0.01 0.18 0.01
Trabecular Spacing (mm) 0.61 0.03 0.67 0.03 0.62 0.03 0.68 0.03
Degree of Anisotropy 1.58 0.05 1.62 0.04 1.61 0.08 1.65 0.07
Mineralization (mg HA/cm3) 1063.4 8.6 1062.8 9.2 1078.9 14.8 1083.9 13.0