What is the purpose of an ab board after liposuction? Is it necessary to get one?

Each Doctor will have their own protocol following liposuction. My patients wear customized compression. For liposuction after care, I recommend adding hyperbaric oxygen and lymphatic massage along with your compression to help decrease swelling. To improve your final results, I also recommend adding vanquish for further fat removal, exilis/venus legacy for skin tightening, cellutone/z wave to make the skin smooth, remove scar tissue, and improve the skin’s appearance. See an expert. Best, Dr. Emer

As you may have gathered from other answers, not many physicians recommend or use the "ab board" you are referring to.     I have had a patient that purchased this type of garment, and they used it without any problem.   Generally, most physicians recommend using a compression garment and/or an abdominal binder after liposuction.     Follow your physicians instructions as to what they prefer.   I do not think a "board" is necessary personally.

I asked my patients to wear a compressive garments for about six weeks after liposuction. This is primarily for comfort. I doubt that garments of any kind affect the long-term outcome.