Prior ultrasonic cavitation treatment is usually not, by itself, a contraindication to thigh liposuction or Renuvion. The main issue is what effect it had on your tissue. If there was bruising, burns, prolonged swelling, firmness, scarring/fibrosis, or skin irregularity, your surgeon may want to wait until everything has settled and examine whether the fat layer and skin are suitable. Renuvion adds internal heat-based skin tightening, so candidacy depends on skin laxity and quality, the amount and location of fat, cellulite or irregularity, medical history, and surgeon experience. It is not a substitute for removing excess skin, and on thin or previously irritated tissue it can increase risks of contour irregularity or thermal injury. Tell your board-certified plastic surgeon exactly when and how many cavitation treatments you had, and let them examine the thighs before deciding whether lipo alone, lipo with Renuvion, or a different approach is safest.