Data expansion:

The hip is the joint of the waist and legs, and the skeleton is the pelvis composed of two hip bones and sacrum, with gluteus maximus, gluteus medius, gluteus minimus and piriformis attached. Hip shape backward, with iliac crest on the upper edge and gluteal groove on the lower edge. When standing upright, the buttocks are square, and the buttocks on both sides are obvious.

Female buttocks are plump and obese, and the intersection angle of posterior superior iliac crest is 90; Male hips are small, square, angular and obvious. The intersection angle between the posterior superior iliac crest is 60.

The tightness of hip muscles affects the perception of hip position, but does not change the height of hip line. The height and hip circumference index of women is greater than that of men, because the hip circumference is not warped. Women of the same height have wider hips. Female pelvic width refers to height, pelvic width index and shoulder width pelvic width index, and the average pelvic width of male is slightly larger than that of female.

Pelvic width is the width between iliac crest and abdomen, not hip breadth (the maximum width of hip); The intertrochanteric width of femur is hip width, which is close to the maximum hip width. Interiliac crest width