Can the fat transferred into your buttocks rot or harden?

Thank you for your question. For the best results get any cosmetic procedure done by a board certified plastic surgeon with experience. Lumpiness is uncommon with a BBL. If you want to avoid these risks then choose a plastic surgeon with experience in this procedure. For the most part this procedure is very common and safe if done correctly by a board certified plastic surgeon. Best of luck!Dhaval M. Patel Double board certified Plastic surgeon Hoffman Estates Barrington Oakbrook Chicago 

Lumpy areas on the buttocks after fat transfer is very uncommon. The lumps are from fat necrosis when clumps of fat cells may die. Fat necrosis can be avoided by placing small amounts of fat deep into the muscle of the buttocks, not injecting the fat in clumps. See an experienced board certified plastic surgeon to do your buttocks fat transfer. 

Fat necrosis (cell death) occurs with all types of fat transfer procedures, not just with fat transferred to the butttock. To minimize this the fat must be injected in very small amounts, deep into muscle with enough space in between each area of fat cells.Best wishes,Dr.Bruno

Is very true that fat transfer can result in that death and internal scarring of the fat. This is typically due to placing that tennis too tightly packed into this buttocks space.

   Fat necrosis can occur with fat transfer to any area.  I have found this to be rare in the thousands that I have performed.Kenneth Hughes, MDLos Angeles, CA

One possible post operative complication with any fat
transfer procedure is the development of fat necrosis.  Fat necrosis occurs when a group of fat cells essentially
die.  This can occur for many different
reasons such as trauma or infection.  When fat necrosis develops the body can
sometimes dissolve and reabsorb the dead cells but other times the fat necrosis
needs to be excised or debrided to stimulate the growth of healthy cells.  Lumpiness after a fat transfer is also a
possible post operative complication.  Again, sometimes the body can resolve the small cysts or lumps left after a fat transfer
given enough time.  However, sometimes
the cysts can be permanent.  It is
important to understand that there are risks to every surgery and no outcome
can be guaranteed.  I recommend you continue
researching on RealSelf and find a board certified plastic surgeon.  Then schedule a consultation to confirm you
are a good candidate for a Brazilian butt lift.  Make sure that you have a clear understanding of any possible risks and
post operative complications so that you can make an informed decision about
having surgery.Be well and good luck!@norrisplastic

Hi jagalvez,There is always a risk for fat cysts. Always seek a very experienced fat transfer doctor and your risk for this problem will be very minimal. Fat necrosis is caused by a surgeon injecting too much fat into a certain area. Ways to avoid fat necrosis is to inject the fat in very small amounts and deep into the muscle fibers.Best of luck,Dr. Millard

Fat necrosis is not that common if the BBl is done laying down very small aliquots of fat during the procedure.