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Traditional liposuction with blunt-tip fenestrated cannulas remains the most commonly performed surgery for localized fat deposits. Refinements in the use of tumescent solutions, improvements in technique/instrumentation and selection of optimal candidates are critical to maintain its safety profile and effectiveness1. Since the introduction of power-assisted liposuction (PAL) by MicroAire Surgical Instruments (FDA 510(K) December 1998, the device has undergone developmental changes to improve mechanical disruption of normal and fibrotic fatty areas, in gynecomastia and within firmer tissues after secondary surgery for superior fat extraction2-8. To date, however, there have been no studies that objectively determine whether the effects of mechanical injury, produced by a PAL device with potential increased surgical trauma, result in increased tissue shrinkage and tightening, after extraction of fat which is not apt to occur with traditional manual liposuction (TL). The purposes of this chapter were to review a 12-year clinical experience with poweredassisted liposuction and, in a limited study, obtain additional quantitative data on tissue shrinkage (accommodation or retraction) and tightening (elasticity) comparing PAL liposuction vs. traditional manual liposuction alone.

Power-Assisted Liposuction (PAL) vs. Traditional Liposuction: Quantification and Comparison of Tissue Shrinkage and Tightening