According to a recent journal of the American Society of Aesthetic Plastic Surgery, complications due to the injection of fat into the buttocks are more common than other procedures, and many are serious. For example, complications leading to fat embolism and death are reported in various places.
This is what we had been proposed several times from the past, but this report is published as a fairly clear numerical value.
At our clinic and hospital, due to the reasons mentioned above, fat injection into the buttocks is not performed except for special cases.