Many women and a growing number of men want a curvier, rounder and shapelier rear end. While thin patients must opt for insertion of special buttocks implants to fill out their derrière, patients who can spare the fat can undergo fat injection in a surgical procedure known as gluteoplasty or brazilian butt lift. Working through small incisions in each gluteal cheek, the surgeon places fat cells at dozens of levels through the patient’s rear. It’s an exacting procedure; with reports that a placement of fat cells the size of teaspoon will perish because that many fat cells can’t find a blood supply. The perfect deposit of fat cells is about the size of a single pearl or a pea; the drops are placed in long rows. After the procedure, the patient must wear a compression garment for about six weeks and sleep on the stomach for about a week. In most cases, non-athletic activities and driving can be resumed in about five days.