Fat emboli may occur following immediately following any type of liposuction but especially after fat grafting the main central buttocks muscle called the gluteus maximus.
The reason that this maneuver is prone to getting fat emboli is that the larger vessels traverse through this area and thus inadvertent fat entry into the vessel is more feasible. If enough fat volume enters a blood vessel (typically a vein) and then travels up to the heart or lungs, the fat can clog up the critical vasculature resulting in serious harm. This risk is minimized using various maneuvers including intimate knowledge of underlying anatomy (larger vessels can be mapped out to avoid inadvertent entry).
In addition, a portable ultrasound can be used to get a real-time view of the underlying structures so that trauma to vessels is minimized. Recent recommendations by the American Society of Plastic Surgeons is to avoid fat grafting to the central buttocks muscle, the gluteus maximus, all together.
Recovery: The recovery for buttock shaping, i.e. Brazilian Buttocks lift, may range from 1 to 2 weeks. Routinely, patients are encouraged to return to the gym with full physical activity resumed no later than 2 to 3 weeks following surgery.
Duration of Results: Patients are universally pleased with Brazilian buttocks results as the gained buttocks volume and shape are permanent.