Table 2.

Results of HR-pQCT in XLH patients and controls.

	Controls (n = 4)	XLH patients (n = 4)	p	Relative difference compared to controls (%)
ULTRADISTAL RADIUS
Basic HR-pQCT measures
Ct.BMD (mg HA/cm3)	676 ± 105	651 ± 98	0.742	−3.7
Ct.Th (mm)	0.72 ± 0.10	0.74 ± 0.10	0.809	2.8
BV/TV	0.13 ± 0.03	0.15 ± 0.03	0.384	15.4
Tb.N (1/mm)	2.12 ± 0.45	1.98 ± 0.30	0.611	−6.6
Tb.Th (mm)	0.06 ± 0.01	0.08 ± 0.02	0.118	33.3
Tb.Sp (mm)	0.43 ± 0.12	0.44 ± 0.09	0.888	2.3
Tb.1/N.SD (mm)	0.17 ± 0.06	0.19 ± 0.06	0.607	11.8
Porosity
Ct.PoV (mm3)	1.36 ± 0.83	0.54 ± 0.34	0.115	−60.3
Ct.Po (%)	0.28 ± 0.17	0.17 ± 0.18	0.403	−33.3
Po.Dm (mm)	0.15 ± 0.03	0.14 ± 0.03	0.591	−6.7
Dm.SD (mm)	0.07 ± 0.03	0.06 ± 0.03	0.665	−14.3
ULTRADISTAL TIBIA
Basic HR-pQCT measures
Ct.BMD (mg HA/cm3)	651 ± 80	692 ± 79	0.499	6.2
Ct.Th (mm)	0.69 ± 0.10	0.82 ± 0.05	0.061	18.8
BV/TV	0.15 ± 0.02	0.13 ± 0.04	0.424	−13.3
Tb.N (1/mm)	2.33 ± 0.41	1.72 ± 0.60	0.147	−26.2
Tb.Th (mm)	0.06 ± 0.00	0.07 ± 0.00	0.021*	16.7
Tb.Sp (mm)	0.38 ± 0.08	0.59 ± 0.34	0.252	55.3
Tb.1/N.SD (mm)	0.15 ± 0.04	0.31 ± 0.25	0.245	106.7
Porosity
Ct.PoV (mm3)	4.10 ± 3.01	3.32 ± 4.87	0.793	−19.0
Ct.Po (%)	0.55 ± 0.32	0.38 ± 0.54	0.592	−33.3
Po.Dm (mm)	0.15 ± 0.01	0.18 ± 0.03	0.092	20.0
Dm.SD (mm)	0.06 ± 0.01	0.10 ± 0.05	0.174	66.7

Values are expressed as mean ± SD. Bold font* indicates a significant difference.