The Basics of Liposuction

How do numerous celebrities maintain their slim figures? While many achieve this through traditional methods like rigorous dieting and exercise routines, some have turned to plastic surgeons for toned thighs, flat stomachs, and perfectly shaped buttocks, even if they don't openly acknowledge it.

It's not just celebrities opting for surgical enhancements to achieve a more streamlined appearance. Annually, around 500,000 liposuction procedures are performed in the U.S., solidifying its status as the top cosmetic surgery, as reported by the American Society for Dermatologic Surgery.

This article explores the process of liposuction, what patients can expect during the procedure, and the potential risks associated with it.

While many are aware that liposuction removes fat from specific body areas to achieve a slimmer appearance, the exact mechanics of how it works remain less understood.

Fat, scientifically termed adipose tissue, consists of cells that store energy and provide insulation. It is primarily subcutaneous, lying beneath the skin. Fat distribution varies by gender: men typically accumulate fat in the chest, abdomen, and buttocks, while women tend to store it in the breasts, hips, waist, and buttocks.

Subcutaneous fat has two layers: deep and superficial. During liposuction (also called lipoplasty or suction lipectomy), a surgeon makes a small incision and inserts a stainless-steel tube, known as a cannula, into the deep fat layer. This layer is safer to target, as it reduces the risk of skin damage. The surgeon manually moves the cannula to break up fat cells, while a vacuum pump or syringe suctions out the dislodged fat. Power liposuction, a newer technique, automates this movement.

On the following page, we delve into the risks and important considerations surrounding liposuction.

Liposuction Cost and Considerations

Liposuction is primarily employed for cosmetic enhancements, smoothing out areas like the thighs, abdomen, buttocks, hips, calves, arms, or back—regions that remain unaffected by diet and exercise. It can also address male breast reduction or eliminate fat tumors (lipomas, or abnormal fat accumulations). Multiple body areas can be treated in a single surgical session.

It’s crucial to understand that liposuction is not a method for weight loss but rather a body contouring technique. Sustainable weight loss can only be achieved through diet and exercise.

Carrying a lot of excess fat doesn’t automatically qualify you as a suitable candidate for liposuction. In reality, individuals of normal weight with good overall health and specific problem areas are the best candidates, as their skin tends to be firm and elastic. Insufficient skin elasticity can lead to sagging post-procedure, which is why older patients may not achieve the same results as younger ones. Additionally, being in good physical health is essential for a smooth surgical experience.

Individuals with conditions such as diabetes mellitus, heart issues, poor circulation, infections, a history of bleeding, or coagulation disorders (like thrombophilia) should consult their primary care physician before considering liposuction. Additionally, those on blood-thinning medications (e.g., aspirin, warfarin, or heparin) are advised against the procedure.

It’s worth noting that liposuction isn’t a specialized medical field, and no specific training is mandated. This means any licensed doctor, including plastic surgeons and dermatologists, can perform it. The Food & Drug Administration suggests inquiring about the doctor’s specialized training in liposuction and their experience with the procedure. Be cautious of advertisements promising unrealistic outcomes—if it sounds too good to be true, it likely is.

Proceed to the next page to learn about the liposuction surgical process.

Liposuction Surgery

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Since not everyone is suited for the same type of surgery—and some may not be suitable candidates at all—each liposuction process begins with a consultation. The doctor assesses your physical and psychological health, evaluates your skin elasticity and fat distribution, and determines if you’re a good candidate. Based on this, they recommend the most suitable liposuction technique for you.

Liposuction can be conducted in various settings, including a surgeon’s office, an outpatient surgery center, or a hospital. Smaller procedures are typically done on an outpatient basis, which is generally more cost-effective.

Prior to the surgery, the doctor marks the skin to identify the areas for fat removal. Like most surgeries, liposuction requires anesthesia. The type of anesthesia depends on the extent of the procedure. For minor areas, local anesthesia (numbing only the targeted area) is used, often combined with a sedative (administered orally or via injection) to help the patient relax.

Alternatively, the doctor might administer an epidural, delivered intravenously to block sensation in a specific body region (e.g., from the waist down). General anesthesia is sometimes used in hospitals for extensive fat removal, though it is not recommended by the American Academy of Dermatology. In most modern liposuction procedures, the doctor injects a local anesthesia as part of a fluid solution.

During the procedure, the surgeon creates one or more small incisions and inserts the cannula into the fat layers of the targeted areas. The cannula is moved rapidly to dislodge fat cells, which are then suctioned out—typically using a vacuum device connected to the cannula—and collected in a flask. The cannula creates tunnels in the fat layer that must collapse during healing to achieve the desired body contour. Post-surgery, patients wear a compression garment to aid this process. Since fluid loss occurs during the procedure, intravenous fluids may be required afterward.

Liposuction Techniques

Surgeons employ various liposuction techniques, including:

Tumescent technique

Introduced by plastic surgeons in the 1980s, this method has become the most widely used liposuction technique. It is regarded as safer than other approaches because it minimizes blood loss and typically eliminates the need for intravenous fluid replacement post-surgery.

In this method, the surgeon injects a significant volume of fluid containing anesthetics (up to five times the amount of fat and tissue to be removed) into the fatty areas. The fluid includes a local anesthetic (lidocaine), a vasoconstrictor to reduce bleeding (epinephrine), and a saline solution to facilitate fat removal. This causes the fat to swell and harden (become tumescent), making it easier to extract with the cannula. Due to the high lidocaine content, the procedure is usually performed under local anesthesia. While it may take four to five hours, the tumescent technique reduces post-surgery swelling, bruising, and pain. Courtesy University of Nebraska Medical Center

Super-wet technique

This approach is similar to the tumescent technique but uses less fluid (approximately equal to the volume of fat and tissue removed). While a small amount of lidocaine may be added, general or IV-epidural anesthesia is often required. The procedure typically lasts one to two hours.

Ultrasound-assisted liposuction (UAL)

This newer technique employs a specialized cannula that vibrates rapidly and emits ultrasound energy. As the cannula moves through the fat cells, the energy liquefies them, allowing for easier suctioning. The ultrasound can be applied externally (using a special emitter) or internally (with an ultrasound cannula).

There are two main types of ultrasound cannulas:

The solid probe emulsifies fat and tumescent fluid beneath the skin, which is then extracted using a standard suction cannula. The hollow-core probe both emulsifies and removes fat, though a standard cannula is often needed afterward to clear any remaining emulsified fat (Sattler, 2005).

UAL requires more time compared to other liposuction methods, but it offers greater precision and effectiveness, particularly in fibrous areas like the back and male breasts. However, it produces significant heat, and if the cannula isn’t removed promptly, it can cause burns. Additionally, the long-term effects of internal ultrasound exposure remain unknown.

Power liposuction utilizes a motorized cannula that moves rapidly back and forth over a short distance (3 to 5 millimeters). This method removes approximately 40 percent more fat per minute than manual liposuction, reducing procedure time and delivering smoother results, according to doctors (Wagner, 2001).

After Liposuction

If the procedure was performed under local anesthesia, patients can usually return home the same day. General anesthesia, however, often necessitates an overnight stay at the hospital or surgical center.

Post-procedure, many patients experience fluid drainage from the treated area. In some cases, doctors insert drainage tubes to assist this process. Patients often wear a snug elastic garment to compress the area, minimize swelling, and aid healing. Antibiotics may also be prescribed to prevent infections (see How do antibiotics work?).

The stitches used in the incision are either removed or dissolve after approximately 10 days. Pain, soreness, or burning sensations are common during recovery but typically subside within three weeks. Swelling usually diminishes after four to six weeks, allowing patients to see the results. Strenuous activities and heavy exercise should be avoided for about a month post-surgery.

Liposuction provides permanent fat removal but cannot prevent obesity. If a patient overeats and avoids exercise post-surgery, rippling may appear in treated areas, and fat may accumulate elsewhere. This is partly due to leptin, a hormone produced by fat cells. Leptin levels drop after fat removal, increasing appetite until levels normalize. This issue is more pronounced in previously overweight individuals, as their bodies may produce new fat cells in untreated areas. Repeat liposuction is possible, but there’s no guarantee the same issue won’t recur.

The Risks

Like any surgical procedure, liposuction involves certain risks, including:

In rare instances, liposuction can result in death. Studies vary, but estimates suggest between 3 and 100 fatalities per 100,000 procedures [ref].

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