Table 2.

pQCT of femurs from 12-week-old WT and OPN−/− mice

Metaphyseal parameters	WT	OPN−/−
Trabecular area (mm2)	0.72 ± 0.14	1.66 ± 0.33a
Trabecular density (mg/cm3)	286 ± 64	379 ± 28
Cortical area (mm2)	2.25 ± 0.19	2.34 ± 0.22a
Cortical density (mg/cm3)	974 ± 47b	818 ± 39

The femoral bone density and area of WT and OPN−/− mice were calculated using a pQCT system as described in MATERIALS AND METHODS. 

^a p < 0.01; 

^b p < 0.05.