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. 2009 Feb 9;24(7):1271–1281. doi: 10.1359/JBMR.090201

Table 3.

Mechanical and Chemical Relationship in Osteonal Bone

Min/matrix ratio CO3/PO4 ratio 1030/1020 ratio 1660/1690 ratio
Indentation modulus (GPa) 0.86* −0.95* 0.96* 0.93*
Hardness (GPa) 0.52 −0.55 0.58 0.44

Correlation between mechanical parameters obtained by nano-indentation (Fig. 6) and those calculated by FTIR microspectroscopy reported as the square of the Pearson's correlation coefficient (r 2) from the 13-yr-old group.

* p < 0.001.