Quote from:

"Current Applications and Safety of Autologous Fat Grafts: A Report of the ASPS Fat Graft Task Force" from Feb 2009

NOTE:

The results therefore might vary depending on the surgeons technique and experience with the procedure.

The important factors in improving viability are:

1 Harvesting technique using low suction

2 Graft preparation should include minimal exposure to air and avoidance of mechanical damage. Live Fat cells should be separated from blood, serum and damaged fat cells via centrifugation. How you centrifuge is also important.

3 Injection technique is very important using multiple passes injecting minute amounts at each pass.

It is a time consuming and tedious procedure and any shortcut will lead to decreased cell viability. If the surgeon takes the time to do it carefully, clinical results will be satisfactory.

I do a lot of fat grafting to various areas of the body. I have performed hundreds of fat grafting procedures and the results have been long lasting.  Two patients have come back for follow up sessions, but not because the fat didn't take from the first procedure. They actually gained weight so they could have more even more prominent buttocks!