Unlike breast implants, silicone gel buttock implants are not FDA approved and thus not legal for buttock implantation in the USA. I actually see about one patient a month that had gel implants done in another country and, although they looked a felt great at first, they are now seeking revision...
The swelling after buttock implants can cause drastically mask the end result. The buttock becomes very tight immediately after. They should "drop and fluff" with time.
You can receive IM injections after gluteal implants as long as the implants are within the fibers of the gluteal muscle. The needle should be position in the muscle avoiding the implant.Eric Weiss MD