Besides augmentation with implants, patients can choose to take fat from other parts of the body and inject the treated fat in the breast tissue, which could also achieve the results of breast size increase and shape correction. This surgery takes the required amount of fat from areas with more ample fat contents, e.g., belly, waist, buttocks, or thighs. Whole fat globules are taken from these parts using low-pressure liposuction and undergo special in vitro titration, centrifugation, or purification; then, the best quality portion is used for injection into the breast. In terms of the strictest standard, on average, only approximately one-third of the fat from liposuction can be used for breast augmentation. Using strict rules during fat preparation allows a higher quality of fat cells, which have a higher survival rate and lower absorption ratio.
In recent years, many new technologies have been developed to isolate platelet-rich plasma from the blood. There is also the more complex stromal vascular fraction (SVF) extraction to isolate stem cell-rich preadipocytes, which are mixed with normal adipocytes for injection. SVF is used to promote fat cell regeneration and activation after transfer. It significantly increases the fat survival rate. We have adopted this cell-assisted fat transfer method at Wish clinic. According to Dr. Chuang’s clinical observation and experience, this newest procedure increases the survival of autologous fat cells to 60%–70%, decreases the risk of calcification, and greatly increases the safety of augmentation using autologous fat. However, the absorption of fat cells often varies according to the patient. The long-term results still need to be confirmed through continuous follow-up.
Clinically, breast augmentation with autologous fat transfer has a wide scope of application. Whether for underdeveloped breasts, the desire for a slight upgrade in cup size, the improvement of postpartum breast atrophy, the adjustment of partial shape, the correction of breast asymmetry, mental block to implants, the removal of implants, or the correction of visible implant edges and wrinkles, autologous fat transfer can be used to improve the situation.