Table 1 Anteroposterior direction of the trabeculae in the femoral head, represented as line graphs^† for both the right and left^$ femora in four individuals (graphs of the entire sample appear in supplementary table 5). Quantitative analyses were carried out between the sides to examine symmetry.

Example subject	Side	r^#	Alignment cost	PISA
1	Left	0.986*	2.615	0.877
1	Right	0.986*	2.615	0.877
2	Left	0.950*	2.080	0.851
2	Right	0.950*	2.080	0.851
3	Left	0.599*	5.822	0.321
3	Right	0.599*	5.822	0.321
4	Left	-0.305*	9.286	-0.112
4	Right	-0.305*	9.286	-0.112

^†Each line graph should be read from left to right, with the vertical axis representing the direction angle and the horizontal axis representing sequential coronal slices of the femoral head, ranging from the most anterior (left) to the most posterior (right). ^$Values of the left femora were in absolute values to create graphs in the same direction; ^#Pearson correlation coefficient; PISA – profile-based image similarity analysis; *p< 0.050.

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