TABLE II.

Comparison of HR-pQCT-Derived Volumetric Densities and Bone Microarchitecture Measures in Fracture and Control Groups

	Distal End of Radius			Distal End of Tibia
Variable	Fracture* (N = 40)	Controls* (N = 80)	P Value	Fracture* (N = 40)	Controls* (N = 80)	P Value
Total density (mg HA/cm3)	304 ± 57	327 ± 51	0.026	293 ± 47	328 ± 52	0.001
Trabecular density (mg HA/cm3)	146 ± 32	172 ± 33	<0.001	156 ± 32	182 ± 37	<0.001
Cortical bone density (mg HA/cm3)	866 ± 50	866 ± 49	0.983	894 ± 39	902 ± 33	0.22
Total area (mm2)	263 ± 42	257 ± 43	0.48	668 ± 122	651 ± 110	0.44
Trabecular area (mm2)	212 ± 42	205 ± 43	0.46	551 ± 123	525 ± 112	0.24
Cortical area (mm2)	51 ± 10	52 ± 10	0.88	117 ± 16	126 ± 20	0.014
Trabecular thickness (mm)	0.06 ± 0.01	0.07 ± 0.01	0.002	0.07 ± 0.01	0.08 ± 0.01	0.005
Trabecular number (mm−1)	1.89 ± 0.36	2.02 ± 0.23	0.032	1.82 ± 0.34	1.93 ± 0.31	0.13
Trabecular separation (mm)	0.49 ± 0.15	0.43 ± 0.06	0.014	0.50 ± 0.13	0.46 ± 0.09	0.037
Stand. dev. of trabecular separation (mm)	0.22 ± 0.12	0.17 ± 0.03	0.032	0.24 ± 0.14	0.21 ± 0.06	0.068
Cortical thickness (mm)	0.76 ± 0.15	0.77 ± 0.15	0.57	1.17 ± 0.19	1.28 ± 0.23	0.014

^*The values are given as the mean and the standard deviation.