The 15 significant homologous variables on the abscissa axis (among the 71 homologous variables) and the difference between right–left on the ordinate axis: the degree of asymmetry (positive and negative) is displaced with respect to the abscissa axis and the perfect symmetry (or the asymmetry is zero) is the abscissa axis. 1, sacroiliac–acetabulum (length); 2, lateral sacral mass/pelvic breadth; 3, pubis symphysis; 4, great axis obturator foramen; 5, scalenion–acetabulum; 6, apex iliac crest–acetabulum; 7, anterior medial iliac buttress; 8, medio-superior iliac buttress; 9, postero-inferior iliac buttress; 10, wing ilium slope; 11, centre–edge angle of Wiberg; 12, acetabulum axis; 13, Hilgenreiner angle; 14, sacraoiliac–acetabulum (angle); 15, iliac crest orientation.