Cortical thickness of the tibial diaphysis reveals age- and sex-related characteristics between non-obese healthy young and elderly subjects depending on the tibial regions

Journal of Experimental Orthopaedics

Table 4 Sex– and age– related differences

		Men (M) vs Women (W) (sex–related difference)				Young (Y) vs Elder group (E) (age–related difference)
		Young group		Elderly group		Men group		Women group
		p value	Summary	p value	Summary	p value	Summary	p value	Summary
Total diaphysis	M	n.s.	–	n.s.	–	n.s.	–	.002	Y < E
	L	n.s.	–	n.s.	–	n.s.	–	<.001	Y < E
	A	n.s.	–	n.s.	–	.003	Y > E	n.s.	–
	P	n.s.	–	n.s.	–	n.s.	–	.009	Y > E
Proximal diaphysis	M	n.s.	–	n.s.	–	<.001	Y < E	<.001	Y < E
	L	n.s.	–	n.s.	–	n.s.	–	<.001	Y < E
	A	n.s.	–	n.s.	–	n.s.	–	n.s.	–
	P	n.s.	–	n.s.	–	n.s.	–	n.s.	–
Central diaphysis	M	n.s.	–	n.s.	–	n.s.	–	n.s.	–
	L	n.s.	–	n.s.	–	n.s.	–	n.s.	–
	A	n.s.	–	n.s.	–	.001	Y > E	.001	Y > E
	P	n.s.	–	n.s.	–	n.s.	–	<.001	Y > E
Distal diaphysis	M	n.s.	–	n.s.	–	n.s.	–	n.s.	–
	L	n.s.	–	n.s.	–	n.s.	–	n.s.	–
	A	n.s.	–	n.s.	–	n.s.	–	n.s.	–
	P	n.s.	–	n.s.	–	n.s.	–	<.001	Y > E

The standardized cortical thickness in each of the 12 regions was compared among the four groups categorized by sex and age (young men, young women, elderly men, and elderly women), using one-way ANOVA with Tukey test. M = medial thickness; L = lateral thickness; A = anterior thickness; P = posterior thickness; n.s. = p > .01