A buttock augmentation through fat transfer is a three-step surgical procedure in which a doctor uses liposuction on the trunk to obtain the necessary fat, then processes the fat and injects it throughout the buttocks, explains the American Society of Plastic Surgeons. The fat injections are intended to add volume.
After the surgery is complete, patients should avoid sitting or sleeping on their backs for at least two weeks, explains the ASPS. When sitting is unavoidable, patients can place a pillow underneath their thighs to redistribute most of their body weight onto the hamstring muscles. Prolonged pressure on the area can damage the newly injected fat.
Patients must wear a compression garment while the buttocks heal. A surgeon may also insert temporary drains in the buttocks to prevent blood or other fluids from becoming trapped under the skin. After surgery, patients should avoid exercise for eight weeks, according to the ASPS.
Surgeons may remove up to three times the amount of fat required for the augmentation during the liposuction process. It's likely that patients only retain 60 to 80 percent of the fat that is injected into their buttocks after one year. In some cases, doctors use implants in addition to fat transfers to create the desired shape, claims the ASPS.