has been introduced over the last couple of years. Initially a solid cannula was introduced & ultrasonic waves used to emulsify the fat which was later suctioned out with a hollow metal cannula. Later the ultrasonic cannula was hollowed to allow both emulsification & suction at the same time. Initially it was thought that ultrasonics resulted in less bruising, less blood loss, greater skin shrinkage & less surgeon fatigue in performance of the procedure. It has seen been proven that there is very little difference in bruising or skin shrinkage. Ultrasonic assisted liposuction results in more noticeable liposuction access site scars, increases the length of the procedure & in inexperienced hands can result in skin burns. My current personal preference is to reserve it for patients who have had prior liposuction or have large volumes of fat to be removed.