Sagittal views of right iliac bone. 11, hipbone length; 12, symphysis pubis height; 13, symphysis pubis slope; 14, horizontal greater sciatic notch; 15, pelvic general index (C/11); 16, superior iliac spines length; 17, apex iliac crest–ischial tuberosity; 18, anterior–superior iliac spine–ischial tuberosity; 19, postero-superior iliac spine–ischial tuberosity; 20, great axis of obturator foramen; 21, anterior iliac crest; 22, apex iliac crest–acetabulum; 23, minimal ilium breadth; 24, pubis length; 25, antero-superior iliac spine–acetabulum.