Generally, a small blunt needle is used to remove fat from either the abdomen or the thighs. The harvested fat is then processed, and the removed fat is optimized to prevent reabsorption (i.e., when the fat is absorbed and there is a loss of substance) through the use of a special filtering process of liposuction , where any oil and serum is separated from the fat.
When the harvested fat is processed, multiple filtering systems are applied to purify the fat and to prevent damage to the fat cells. Furthermore, the loss of growth factors in the fat is minimized during the fat purification process. Thus, the filtering process both improves the fat graft survival rate and maximizes fat maintenance at the injection site (i.e., the area where the fat graft is re-injected into the body) resulting in better, longer lasting results.
After the purification process, pure fat is injected back into the patient through the use of a smaller blunt needle than the one originally used to harvest the fat. Generally, the entire procedure is fairly simply and associated with very little to no scarring or discomfort. Additionally, since a patient’s own tissue is used, there are no instances of allergic reactions or foreign body reactions associated with this procedure. The recovery period is short and the patient often experiences only a minimal amount of discomfort. Thus, Fat Grafting is considered one of the best methods to contour or rejuvenate a person’s overall appearance.
For older patients with depressed wrinkles or facial volume loss, the use of collagen based fillers (Artecoll), cadaver skin (Alloderm), or hyaluronic acid-based gel fillers (Restylane, Juvederm) offer a temporary solution and are not ideal for large surface areas in facial contouring. Thus, one of the main advantages of Fat Grafting is that it can be used for overall facial contouring in older patients.
Other advantages of Fat Grafting are no allergic reactions, minimal pain and discomfort, and nominal side effects associated with the procedure. In addition, the procedure is considered fairly safe, and since it requires no incision, there are no long-term visible scars in the results. Furthermore, compared to fillers (e.g., Restylane, Juvederm, etc.), Fat Grafting is a cheaper, more economical alternative. In general, Fat Grafting also has a fairly quick recovery time, so depending on the extent of the procedure, a person may return to normal daily activities in as little as one day.
Although Fat Grafting is considered relatively safe, there are a few disadvantages. Some of the main drawbacks to this procedure include the following:
- Up to 50% fat resorption
- Prolonged swelling and bruising
- Irregular results
- Fat hardening – especially when Fat Grafting is used to contour the breast or buttocks, since a large amount of fat is injected into ne area at one time
- Minor discomfort during the fat harvesting and/or fat re-injecting process
- In rare cases, Fat Grafting has also been known to lead to infections
Duration of Surgery
Less than an hour
The entire procedure is done under local anesthesia (i.e., a method used by Dr. Kenneth Kim that numbs any sensation on and/or around the surgical site. This is often done through the direct injection of anesthesia at the surgery site and may be accompanied by a mild oral sedative to help ease tension during surgery). Therefore, there is no risk generally associated with iv (intravenous) sedation or general anesthesia (i.e., a method used to render a patient temporarily unconscious, paralyzed, and intubated with a breathing tube during surgery).
Depending on the location and extent of the procedure, recovery time can last anywhere from 1 day to 3 weeks.
- A more beautifully contoured shape.
- A more youthful, vibrant look.
Although Fat Grafting was not designed to correct wrinkles, by subtly increasing the volume of an aging face, this procedure can also minimize the appearance of fine lines and wrinkles.
Ongoing research in the use of stem cells in Fat Grafting means that this procedure now produces longer lasting results.
In the past, there was a high rate of fat reabsorption, which limited the use of fat for facial contouring purposes. However, recent developments have led to improved methods for purifying the harvested fat through the use of growth factors, which decrease the reabsorption rate. These improvements lead to better 3-dimensional contouring and volume restoration in the body or face.
Some conditions that could be improved with this procedure include the following:
General facial fat and/or soft tissue loss with aging, depressed forehead, sunken upper eyelid, lower eyelid wrinkle, loss in lower eyelid youthfulness, depressed (i.e., recessed or sunken areas of the body and/or face) forehead and/or temple, asymmetric forehead and/or temple, depressed areas below the lower eyelid and/or inner cheek region (i.e., midface), deep nasolabial fold (i.e., creases along the sides of a person’s nose that continue to the corners of the mouth), aging hands, wrinkles, fine lines, depressed scars, aging face with loss in volume, wide cheekbones, flat face, and/or retruded (i.e., recessed or caved in) face.
Some areas that could be enhanced by this procedure include the following:
- Facial Regions
- Upper eyelid, lower eyelid, youthful eyelid
- Lips, forehead, temple, cheek, cheekbone, nasolabial fold, chin, nose