After fat grafting in the buttocks, it is important to avoid pressure on the area filled with fat. This is because, in order to make the procedure more effective, the transplanted fat is first processed into tiny fat particles during the procedure before it is injected into the right place. At this point, the fat is in a liquid state, so it tends to flow or deform easily just after the procedure. After 3~4 weeks, the fat will grow in the transplanted area of the buttocks and become shaped and resistant to pressure like the fat that originally grew there. Therefore, it is necessary to avoid squeezing the Department after the surgery. Especially when you have just had the surgery, it is best to lie down in the prone position: lying on the back and sedentary, driving, etc. with pressure on the buttocks should be avoided for 1 week after the surgery, and the rest of the requirements for the position are not particularly strict. It is possible to affect the results of the surgery if the grafted area is compressed after the surgery. However, as long as you sit in the correct position, the surgical area is usually not compressed. When sitting, most of the body’s weight is centered on the two prominent bony structures, the sciatic tuberosities. While in standing, the sciatic nodes are located in the lower part of the buttocks. In order to give the cozy area a more upright shape, doctors usually do not fill in around the sciatic nodes. Therefore, as long as one maintains a straight sitting posture so that all of one’s weight is on the sciatic nodes, there is no effect on the outcome of the procedure. However, when driving, a person’s body is leaning back, and this is when the weight of the body may press on the surgical area, affecting the results of the procedure, so similar situations need to be avoided.