Abdominoplasty, also known as a tummy tuck,  is a surgical procedure designed to firm and smooth the abdomen. A healthy diet and regular abdominal workouts can sometimes do little to eliminate accumulations of excess fat and loose, sagging skin in the abdominal area. This cosmetic procedure removes excess skin and fatty tissue from the middle and lower abdomen and may also tighten the muscles of the abdominal wall. The result is a flatter tighter abdominal profile.