The sciatic nodes are located directly below the buttocks, which is commonly referred to as the tip of the buttocks. When the patient is sitting or standing, a very obvious bony protrusion can be felt directly below the buttocks, on the left and right sides, and this is the sciatic tuberosity. The sciatic tuberosity is a part of the sciatic bone, which is the corner of the sciatic bone and is the main weight-bearing area. Below this area is the bursa of the sciatic tuberosity, and under it there is a very rich gluteal muscle cover, so that when the body is sitting or standing, this area is subjected to a huge load, but generally do not feel pain. However, clinically, this area is also a common site of injury, for example, if a patient slips and falls while walking on a slippery surface and sits on the ground, this area is very prone to injury, such as fractures of the sciatic and coccyx bones or diseases such as bursitis around the sciatic tuberosity.