In Vivo Assessment of Elasticity of Child Rib Cortical Bone Using Quantitative Computed Tomography

Table 3

Estimated Young’s modulus of child ribs from quantitative computed tomography along the rib.

Group		Age (year)	E^1	Eposterior^2	Elateral^3	Eanterior^4
1	Mean	0.9	7.1	6.8	8.0	6.5
	SD	0.2	2.5	1.8	2.9	2.6
2	Mean	1.8	7.6	6.2	8.7	7.9
	SD	0.4	1.6	1.0	2.4	2.4
3	Mean	3.1	7.1	6.6	8.0	6.6
	SD	0.5	1.1	1.2	1.5	1.7
4	Mean	6.9	10.0	8.2	11.2	9.6
	SD	0.3	2.6	2.2	3.3	3.0
5	Mean	10.1	10.8	10.9	11.5	9.8
	SD	1.3	1.8	1.3	2.0	2.8
6	Mean	13.9	12.6	11.7	14.4	11.2
	SD	0.7	1.9	1.8	2.7	2.1
7	Mean	17.8	11.6	9.3	13.0	11.3
	SD	1.1	1.9	2.7	3.2	1.6

¹Global: slices 5%–95%; ²posterior: slices 5%–25%; ³lateral: slices 35%–65%; ⁴anterior: slices 75%–95%.