. Author manuscript; available in PMC: 2011 Jun 1.

Published in final edited form as: Calcif Tissue Int. 2010 Apr 20;86(6):470–483. doi: 10.1007/s00223-010-9359-y

Table 2.

Body mass, and femoral and radial morphology

		Female					Male
		2 mo. (n = 11)	4 mo. (n = 10)	7 mo. (n = 10)	12 mo. (n = 10)	20 mo. (n = 8)	2 mo. (n = 11)	4 mo. (n = 10)	7 mo. (n = 10)	12 mo. (n = 10)	20 mo. (n = 10)
Body Mass^A,^S,^A-S (g)		19.4 ± 0.7	21.7^a ± 0.7	26.0^a,^b ± 1.4	27.1^a,^b ± 1.5	26.4^a,^b ± 2.9	22.8^* ± 1.1	26.3^*,^a ± 1.1	31.9^*,^a,^b ± 4.5	30.5^*,^a,^b ± 2.7	26.0^a,^c,^d ± 5.2
Femur	Length^A (mm)	13.8 ± 0.4	15.3^a ± 0.3	15.9^a,^b ± 0.2	16.2^a,^b ± 0.4	16.5^a,^b,^c,^d ± 0.3	13.9 ± 0.9	15.3^a ± 0.3	16.0^a,^b ± 0.3	15.9^a,^b ± 0.8	16.4^a,^b,^c,^d ± 0.3
	Bone Area^A,^A-S (mm²)	0.718 ± 0.019	0.891^a ± 0.065	0.975^a,^b ± 0.052	1.057^a,^b,^c ± 0.091	1.079^a,^b,^c ± 0.026	0.786^* ± 0.056	0.953^*,^a ± 0.039	1.042^a,^b ± 0.126	1.006^a,^b ± 0.086	1.005^a,^b ± 0.105
	Mom. Inertia^A,^S,^A-S (mm⁴)	0.075 ± 0.004	0.105^a ± 0.017	0.122^a,^b ± 0.014	0.153^a,^b,^c ± 0.027	0.201^a,^b,^c,^d ± 0.013	0.093^* ± 0.010	0.107 ± 0.010	0.124^a,^b ± 0.035	0.134^a,^b ± 0.023	0.149^*,^a,^b,^c,^d ± 0.024
	Cortical Thickness^A,^S (mm)	0.231 ± 0.015	0.271^a ± 0.016	0.285^a ± 0.013	0.301^a,^b ± 0.025	0.275^a,^d ± 0.016	0.257^* ± 0.033	0.294^*,^a ± 0.011	0.335^*,^a,^b ± 0.037	0.318^a,^b ± 0.031	0.314^*,^a,^b ± 0.034
Radius	Length^A,^S (mm)	10.4 ± 0.3	11.1^a ± 0.1	11.1^a ± 0.2	11.0^a ± 0.2	11.1^a ± 0.6	10.7 ± 0.4	11.2^a ± 0.2	11.7^*,^a,^b ± 0.4	11.6^*,^a,^b ± 0.3	11.5^*,^a ± 0.4
	Bone Area^A,^S,^A-S (mm²)	0.207 ± 0.009	0.232^a ± 0.012	0.256^a,^b ± 0.012	0.268^a,^b,^c ± 0.015	0.271^a,^b,^c ± 0.007	0.233^* ± 0.016	0.256^*,^a ± 0.010	0.265^a ± 0.019	0.266^a ± 0.015	0.266^a ± 0.013
	Mom. Inertia^A,^S,^A-S (mm⁴)	0.0054 ± 0.0005	0.0063^a ± 0.0007	0.0073^a,^b ± 0.0009	0.0079^a,^b ± 0.0011	0.0094^a,^b,^c,^d ± 0.0013	0.0076^* ± 0.0012	0.0076^* ± 0.0008	0.0085^* ± 0.0012	0.0085 ± 0.0010	0.0085 ± 0.0011
	Cortical Thickness^A,^A-S (mm)	0.147 ± 0.005	0.169^a ± 0.006	0.191^a,^b ± 0.008	0.197^a,^b,^c ± 0.007	0.189^a,^b,^d ± 0.007	0.153^* ± 0.007	0.180^*,^a ± 0.006	0.183^a ± 0.008	0.183^*,^a ± 0.007	0.179^*,^a ± 0.009

Area, moment of inertia and thickness were determined at the mid-diaphysis using microCT

Significant effect of age;

Significant effect of sex;

^A-S

Significant age-sex interaction; ANOVA, p < 0.05

Male different from female at same age, p < 0.05 post hoc test

different from 2 mo;

different from 4 mo;

different from 7 mo;

different from 12 mo;

p < 0.05 post hoc test