Ultrasound-assisted lipoplasty (UAL) implies that ultrasound energy is appl
ied directly to adipose tissue by means of a probe or cannula, resulting in
emulsification of fat. UAL can be performed with either a solid probe or a
hollow titanium cannula that vibrates at ultrasonic frequency. Suction-ass
isted lipoplasty (SAL) implies that adipose tissue is removed from the subc
utaneous space by means of a traditional blunt-tip hollow cannula attached
to high-power suction. The purpose of this article is not to debate the mer
its of one technique over the other; it is simply to compare UAL and SAL fr
om a technical standpoint. Given that most plastic surgeons are familiar wi
th SAL and that UAL is still relatively new to US plastic surgeons, the com
parison is intended as a jumping board for those who are already proficient
at SAL technique who may be interested in expanding their surgical armamen
tarium. UAL is not a replacement for SAL; it is more an extension of SAL te
chnique.