The hips are generally referred to as the hip bones. At the junction of the abdomen and the thighs, the prominent bones that can be touched when the hands pinch the waist are the hip bones, which are the important structures that make up the pelvis. Hip bone is located in the lower abdomen and thighs between the position, do hands pinch waist action, both sides of the body can touch the protruding bony structure is the hip bone. The hip bone is an irregular bone composed of the ilium, sciatica, and pubis, with the upper part being flat and broad for the ilium; the sciatica is located in the lower back of the hip bone, and the pubis is located in the lower front, and the three bones meet at the acetabulum in the middle of the hip bone. The acetabulum is a deep fossa facing outward and downward, which can form the hip joint with the articular surface of the femoral head. The right and left hip bones and the sacrum and coccyx at the back can enclose the pelvis.