Background: Requests for buttock augmentation are increasing in the United States because of changes in lifestyle and fashion that emphasize the "gluteal aesthetic unit."
Objectives: We review the use of micro fat grafting for enhancing the buttocks in a series of 566 patients.
Methods: Tumescent solution (1 mg epinephrine per 1000 mL saline solution) was infiltrated; for small cases the volume used was less than half the amount of expected fat to be harvested. Harvesting was accomplished either manually with a syringe or with a liposuction pump that allowed precise control of the vacuum. The fat was injected both intramuscularly and subcutaneously into all levels of the desired area for augmentation of the buttocks. The typical augmentation averaged 300 to 400 mL per side but ranged from 175 mL to about 800 mL, depending on the patient's desires and the amount of donor fat available.
Results: Patient and physician satisfaction with the results was high. Approximately 50% to 75% of the fat grafted remains in the long term. Complications included cellulitis (1.9% of cases), which responded promptly to treatment with cephalosporin, and infrequent seromas and hematomas (0.8% of cases).
Conclusions: Buttock augmentation by micro fat grafting is a safe, simple procedure. Compared with implant placement, the advantages of micro fat grafting include greater flexibility in the size and placement of augmentations, less pain and faster recovery for the patient, and less risk of complications. The technique is limited only by the amount of donor fat available. (Aesthetic Surg J 2001;21:311-319.).