Liposuction is the most common form of a group of techniques which are aimed at selectively removing fat from various areas of the body. It is not a method of weight loss and should not be used to achieve that end. It is good for removing fat from areas that are out of balance with the rest of the body and can't be brought back into balance through diet or exercise. In order for liposuction to work satisfactorily, there must be sufficient elasticity in the overlying skin to allow it to shrink evenly and smoothly over the new contour. 

Some techniques such as PAL (power assisted lipoplasty) simply make it physically easier on the surgeon by mechanically moving the apparatus. All techniques frequently use a standard liposuction cannula to definitively remove the disrupted fat cells. Good and bad results can result from the use of any and all of the liposuction techniques. The results are more dependent on the physician operator than the equipment or the technique used. Don't be led astray by claims that one technique or type of equipment is the only smart one to use.

Liposuction can be performed under local anesthesia, but is more commonly performed with the addition of oral or intravenous sedatives and pain relievers. In some cases, especially when combined with other larger procedures, it may be performed under a general anesthetic. A surgeon who performs liposuction under all of the various techniques of anesthesia is more apt to provide you with all of your options.