Are complications of high risk when it comes to fat transfer to the hips?

Complications like this are rare. Keep in mind, fat transfer technique is important for successful fat transfer. I recommend water-assisted fat harvesting which gives pure fat to transfer and combine with platelet rich plasma (PRP) to get the most viable and sustainable fat cells. I combine with Sculptra (depending on area) to improve results. I recommend getting a formal evaluation with an expert. Best, Dr. Emer

Fat embolism is a risk in any fat transfer. Transfer to the hips is a safer procedure than the buttock since it is easier to make sure you stay superficial to the muscles in the hip. The buttock transfer is safe too as long as the surgeon has experience and careful to remain superficial to the muscle. Discuss with surgeons who do a lot of these procedures. Good luck.

The complictations of Fat Transfer\Fat Injections have mostly been due to BBL. It has recently been shown that the reason for this complication is injection of fat into the buttoclk muscle. The fat under pressue leaks under the muscle tearing the large vessel of the lower buttock. The fat then enters the vessels and travels directly to the heart. Fat injection can be done safely by not injecting into the muscle and not injecing into the loweR buttock.
Knowing these principles Fat Injection of the hips can be done safely by a Board Certified Plastic Surgeon who  has experience in this.
A newer technique I use for fat injection is Power Assisted Lipo Filling to gve a more controlled even distribution of the injected fat.