Liposuction as you be aware is a procedure where the fat is "sucked out " of the area you are treating by mechanical removal of the fat tissue ie. moving the cannula in and out and by the suction that is attached to the cannula (some doctors do injections to the area prior to help with the liposuction procedure). Whether fat reduction/removal treatments have long lasting result is dependent also on the patient.
For example if you go for a liposuction procedure and "suck out" X amount of fat, the fat will return if your lifestyle habits don't change or get worse ie. eating fatty foods daily, lack of exercise etc. It is also an invasive procedure and there are limits on how much liposuction can be done at any given time also. Keep in mind that liposuction treats fat but does not treat skin laxity from excessive weight loss this is a common misperception. This requires a different procedure.
Alternative to liposuction and less traumatizing would include cryolipolysis aka "fat-freezing" - a non-invasve technique that help reduce fat 10-15% over time (despite some marketing adds claim up to 25% this is debatable). However this technique requires a few months and requires that the technician be trained properly on the application of the device.
In conclusion liposuction can have long-lasting results if you are willing to change your lifestyle accordingly. Please ensure you contact a plastic surgeon specialist if you are interested in liposuction for further information.
