The most common liposuction procedures include tumescent liposuction and a technique called the super-wet technique, according to MedlinePlus. Both procedures are almost the same and involve injecting a certain amount of liquid into the body before fat is removed. However, the super-wet technique uses less liquid than tumescent liposuction and may take less time, but it requires general anesthesia.
Tumescent liposuction involves the injection of medicated liquid containing an anesthetic, such as lidocaine; fluid medicines to contract a patient's blood vessels, such as epinephrine; and saline, states MedlinePlus. The medicines help numb the area where the surgery is being done, reduce the amount of bruising after the procedure, and lower potential blood loss and swelling that may occur. The solution also aids in the actual removal of fat.
Another common type of liposuction is called ultrasound-assisted liposuction, or UAL, according to WebMD. This type of liposuction uses ultrasonic vibrations to liquefy fat, at which point the fat cells are vacuumed out. The procedure can be done one of two ways: externally or internally, according to MedlinePlus. In external UAL, the ultrasonic vibration emitter is used above the skin's surface with a special emitter. In internal UAL, a small, heated cannula is used under the skin's surface. UAL liposuction is often used as a secondary procedure or for procedures that require a greater amount of precision.