Is the only way to treat ant deformity to add fat to the thighs? You can't reduce the size of the the butt?

Although I have not addressed the "Ant deformity" in any of my previous blogposts on BBL (see link below), I assume that is your case because I have only heard it from patients who have had a BBL.The Ant deformity happens when 2 things are done in surgery:When fat is injected to the upper pole of the butt to create a "high butt". This effectively increases the area of the butt relative to the body. Fat is taken out of the outer thigh to inject in the butt. This reduces the size of the thigh relative to the buttThe result is an overly round butt that sits on a thinned leg.To correct it, one must "reverse" what was done. First, liposuction fat off the top of the butt to return it to a more normal proportion relative to the bodyAdd fat to the outer thigh at the point where it blends with the butt to make it appear like a normal transition from butt to thigh.

Combination of conservative liposuction of over corrected areas and fat transfer would most likely be the best approach. However, only on the basis of in person evaluation one could give you a more meaningful answer. Good luck.

I would suggest posting photos and getting a virtual consultation without pictures nobody can tell what you are a candidate for.
You need a formal evaluation by an expert in body shaping and contouring to determine what is best.  Traditional liposuction awake and smart liposuction are old methods and do very poorly for tightening skin or significant skin tightening or contouring.  Small problem areas can be improved slightly by these methods.  The best in body contouring not only removes fat with energy devices like VASER ultrasound but also internally heat the skin with radio-frequency devices such as J PLASMA/RENUVION, InMode BodyTite, ThermiRF to heat the under surface of the skin and tighten it at the same time as fat removal. These combinations are called 4D HIDEF VASER contouring and can only be done by a well . trained body contouring specialist. At the same time fat should be harvested, PRP and stem cells added and injected into muscles or indentations/cellulite to get body shaping and contouring.  This is known as a Brazilian butt lift when you inject the fat to the buttock for contouring and lifting, but fat can also be used in areas such as the chest/breast, arms/shoulders, calves and face.  Cellulite should also be treated with cellfina, sculptra, subcision and/or fillers such as bellafill, renuva synthetic fat, or sculptra.  If skin is very loose before surgery then it will need to be removed such as lower abdominal skin (tummy tuck/abdominoplasty), breast skin (breast lift), arm skin (brachioplasty).  Overall you need a full assessment, but simple liposuction alone will not tighten skin and needs a combination of various methods -- fat removal, skin tightening, defining, fat grafting, skin removal -- to get the best in body contouring and body sculpting.  Dr. Emer.