Patients who have successfully undergone significant weight loss or weight loss surgery (post bariatric surgery) are often faced with an unintended side effect: substantial amounts of loose, sagging skin on their bodies. Abdominoplasty is a cosmetic surgery procedure used to make the abdomen more firm. The surgery involves the removal of excess skin and fat from the middle and lower abdomen in order to tighten the muscle and fascia of the abdominal wall.