Liposculpture – Ultrasound Assisted Lipoplasty. Cancun Mexico. Liposculpture is a surgical procedure that is used to give you more muscle tone and shapeliness. Ultrasound assisted lipoplasty uses ultrasonic waves to liquefy fat in the patient’s target area, later to be sucked out by a cannula, or a thin type of medical vacuum. This form of assisted liposuction is typically used for stubborn areas within the patient, such as the knees, neck, chin, feet and ankles