Table 3.

HSA Parameters in Subjects With Hip Z-Scores ≥−1 vs <−1.

	Hip Z-Score ≥−1 (n = 80)	Hip Z-Score <−1 (n = 22)	P
Subperiosteal width, cm
Narrow neck	2.91 ± 0.39	2.97 ± 0.41	NS
Trochanter	4.55 ± 0.79	4.47 ± 0.81	NS
Femoral shaft	2.32 ± 0.61	2.22 ± 0.61	NS
Endocortical width, cm
Narrow neck	2.47 ± 0.41	2.62 ± 0.44	NS
Trochanter	3.53 ± 0.91	3.66 ± 0.93	NS
Femoral shaft	1.16 ± 0.54	1.16 ± 0.70	NS
Cross-sectional area, cm2
Narrow neck	3.03 ± 0.50	2.46 ± 0.26	<.0001
Trochanter	4.61 ± 1.07	3.50 ± 0.66	<.0001
Femoral shaft	3.55 ± 0.99	2.84 ± 0.72	.002
Cross-sectional moment of inertia, cm4
Narrow neck	2.10 ± 0.73	1.70 ± 0.51	.02
Trochanter	9.03 ± 4.82	6.68 ± 3.58	.04
Femoral shaft	2.13 ± 1.47	1.61 ± 1.10	NS
Section modulus, cm3
Narrow neck	1.35 ± 0.36	1.06 ± 0.26	.0006
Trochanter	3.31 ± 1.29	2.44 ± 0.89	.004
Femoral shaft	1.57 ± 0.80	1.23 ± 0.59	NS
Cortical thickness, cm
Narrow neck	0.218 ± 0.03	0.170 ± 0.02	<.0001
Trochanter	0.517 ± 0.1	0.403 ± 0.07	<.0001
Femoral shaft	0.582 ± 0.15	0.526 ± 0.11	NS
Bucking ratio
Narrow neck	7.36 ± 2.23	9.95 ± 3.73	<.0001
Trochanter	5.25 ± 1.7	6.70 ± 2.3	.001
Femoral shaft	2.15 ± 0.6	2.36 ± 1.0	NS

Abbreviation: NS: not significant.