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Fat Processing Methods for Injectable Facial Fat Grafting

 

Fat grafting to the face has become an accepted and popular soft tissue augmentation method. Most of this fat grafting is done by injection given its versatility and ability to be done just anywhere on the face. By harvesting the fat by liposuction from a body site, it is processed and then injected. Given the highly unpredictable nature of such injected fat graft retention, much debate has been given for the various steps in the process to optimize graft volume retention.

The processing part of the harvested fat has been the most scrutinized part of the facial fat grafting process. Methods available include telfa wecking, gravity separation and centrifugation. Which of these three fat processing techniques methods results in better fat graft survival and volume retention? Lack of any standardization in fat grafting to date makes determining the best fat processing method difficult.

In the January 2018 issue of the JAMA Facial Plastic Surgery journal an original investigation was published entitled Three-Dimensional Volumetric Analysis of 3 Fat-Processing Techniques for Facial Fat Grafting – A Randomized Clinical Trial’. In this paper the authors compared three fat processing techniques with 3-dimensional (3-D) technology to determine the optimal fat-processing technique for improving the volume retention of injected facial fat. Over a one year period over fifty (52) patients with facial asymmetry were treated by facial fat grafting. The patients were equally divided into three groups based on the fat processing method of the injected fat, sedimentation (group 1), centrifugation (group 2), and cotton pad filtration. (group 3) After surgery patients underwent 3-D scanning before and at 1, 3, 6, and 12 months after surgery.

Assessment was done by determine the volume of the graft maintained with 3-D software. The mean (SD) percentage volume maintenance at 1, 3, 6, and 12 months postoperatively was, respectively, 49%, 45%, 43%, and 41% for Group 1cotton pad filtration group; 41% , 38%, 36%, and 34% for Group 2 centrifugation group; and 37%, 34%, 31%, and 31% for Group 3 sedimentation group. Variance analysis showed that the cotton pad filtration group demonstrated a statistically significant higher percentage volume maintenance in comparison with the centrifugation and sedimentation groups.

While the authors and their analysis showed the cotton pad infiltration method of fat processing produced better graft survival, I would take a slightly different take on their findings. At the least this clinical study shows that all three fat processing methods have success and advanced processing technology does not necessarily make for better fat grafting results. Cotton or telfa pads are certainly low tech but they work.

Dr. Barry Eppley

Indianapolis, Indiana


Dr. Barry EppleyDr. Barry Eppley

Dr. Barry Eppley is an extensively trained plastic and cosmetic surgeon with more than 20 years of surgical experience. He is both a licensed physician and dentist as well as double board-certified in both Plastic and Reconstructive Surgery and Oral and Maxillofacial Surgery. This training allows him to perform the most complex surgical procedures from cosmetic changes to the face and body to craniofacial surgery. Dr. Eppley has made extensive contributions to plastic surgery starting with the development of several advanced surgical techniques. He is a revered author, lecturer and educator in the field of plastic and cosmetic surgery.

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