Buttock Lift and Auto-Augmentation After Weight Loss

Weight loss empties the buttock. The fat that gave it projection goes, the skin that held it does not recover, and the result is a buttock that is flatter, sits lower than it did and often has loose skin above it at the lower back. The correction is a lift, and where projection also needs restoring, it can be done with your own tissue rather than an implant.

• Why the buttock changes
• Lift and auto-augmentation
• Are you a candidate
• The operation
• Fat transfer
• Recovery
• Scars
• Risks
• Cost and Medicare
• Common questions

Why the buttock changes after weight loss

The shape of the buttock depends largely on the fat over the gluteal muscles and on the skin that supports it. After major weight loss both change: the volume goes, and skin that has been stretched for years does not contract to match. The buttock descends, loses projection and can develop a fold beneath it, while loose skin gathers above it across the lower back and flanks.

Exercise strengthens the gluteal muscles and can improve shape a little, but it cannot remove skin that is in excess or replace the volume that has gone. How the weight was lost matters less than whether it has now stayed stable. More on flat or sagging buttocks after weight loss.

The two components: lift and auto-augmentation

Problem	What addresses it
The buttock has descended, with loose skin above it	A lift — skin is removed at the upper buttock and lower back, and the tissue is resuspended
The buttock has lost projection and looks flat	Auto-augmentation — tissue that would be discarded is kept and turned under to rebuild fullness

Most patients after major weight loss have both, which is why the two are usually done together in the one operation.

Auto-augmentation, in plain terms. In a lower body lift, a band of skin and fat is removed from around the trunk. Rather than discarding the portion over the buttock, it can be de-epithelialised (the surface layer of skin removed), folded under and secured to give projection. It is your own tissue, in one piece, on its own blood supply.

It has real limits. How much projection can be achieved depends entirely on how much tissue you have there to work with, and some settling is expected as it heals. It is not a way of producing a larger buttock — it is a way of restoring shape while removing the excess.

Is a buttock lift right for you?

Whether auto-augmentation is worthwhile depends on how much tissue remains over the buttock, which needs examination. You can send photos first for an initial view. Medical conditions such as diabetes need to be well controlled, and nicotine in any form substantially increases the risk of wound problems. Dr Kumar’s team can arrange preparation with an Accredited Practising Dietitian and a DEXA body composition scan where it will help.

What the operation involves

The buttock is rarely a problem in isolation after weight loss. The skin excess runs continuously from the abdomen around the flanks to the buttocks and outer thighs, so the buttock is corrected as part of that circumferential operation — a lower body lift, also called a belt lipectomy — rather than on its own.

The operation is done under general anaesthetic at Westmead Private Hospital and typically takes five to six hours. Before you consent, Dr Kumar marks the lines on you and shows you where the scar will fall. The back half of the operation removes the excess above the buttock and creates the auto-augmentation flap where it is planned; the front half addresses the abdomen and mons. Drains are placed and a compression garment is fitted before you wake. Most patients stay three to four nights.

A lower body lift addresses the abdomen, mons, outer thighs, lower back and, to a variable degree, the buttocks. It does not address the inner thighs, the breasts or the chest, which are separate operations. How staged body contouring is planned.

What about fat transfer?

Fat grafting to the buttock is a different procedure with a different risk profile, and Dr Kumar’s practice does not offer it. Auto-augmentation during a body lift is a different operation: the tissue stays attached and is repositioned rather than harvested and injected. Buttock implants are not used in this practice for this indication. If restoring projection is your priority, raise it directly at your consultation.

Recovery, week by week

When	What to expect
In hospital (3–4 nights)	Drains and compression garment in place. You will be up and walking with help early, which reduces the risk of clots. You will be shown how to lie, sit and stand without loading the wounds.
Weeks 1–2	Recovering at home. Drains come out once the fluid output falls. Short, frequent walks. Direct pressure on the buttocks is limited as advised.
Week 2	Most people return to desk-based work, with arrangements for sitting. Physical roles take longer. Time off work after body contouring.
Weeks 2–6	A gradual return to most everyday activities depending on effort. The garment is worn for six weeks. No heavy lifting.
Weeks 6–12	The garment comes off at six weeks. Activity builds up, with full clearance at around twelve weeks for most patients.
Months 3–18	The auto-augmented tissue settles into its final shape and the scar matures.

The specific point with the buttock is sitting. You will be advised how and how long to limit direct pressure on the buttocks, which affects work, driving and travel more than most people expect — plan for it, particularly if you are travelling from regional NSW. The nurses who prepare you for surgery are the same nurses who see you at every post-operative review, and follow-up continues to twelve months. The full recovery timeline.

Scars

The scar sits in a band around the lower trunk, positioned to lie under a waistband or underwear line. It is long and you should expect to see it. It takes twelve to eighteen months to mature, and Dr Kumar’s team will show you how to care for it. Numbness near the scar is common and usually improves over months. How the scars settle.

Risks and complications

All surgery carries risk. The risks Dr Kumar will discuss with you include:

Read more about the risks of surgery.

Cost and Medicare

The initial consultation with Dr Kumar is $400, with a Medicare rebate of approximately $88 where you have a GP referral. A GP referral is required to see Dr Kumar. Surgical fees are quoted individually after your consultation, in a written itemised quote. The hospital provides its own quote after checking your health fund, so your final quote shows whether your fund covers you.

Medicare item 30179 applies where the operation is a circumferential excision of redundant skin and fat as a direct consequence of significant weight loss, and the criteria are met. Item 30169 applies where a smaller non-abdominal excision is performed. Both require significant weight loss of at least five BMI points, weight stable for at least six months and functional problems rather than appearance. Auto-augmentation performed for shape is part of the operation rather than a separately rebated item.

Dr Kumar’s practice offers an in-house instalment plan. The full Medicare criteria, what skin removal surgery costs and health fund cover.

Results

The aim is a buttock that sits higher, with the loose skin above it removed and, where auto-augmentation is used, some restored shape. It is a restoration, not an enlargement. The final contour takes several months to show, and further substantial weight loss is what most often undoes it. Individual results will vary. Before and after photographs of Dr Kumar’s patients are in the gallery (18+).

Where Dr Kumar operates

Dr Kumar consults at Westmead, Penrith and Orange, and performs body contouring after weight loss at Westmead Private Hospital. Body contouring for regional NSW patients. For an overview of every operation, see body contouring after weight loss.

Common questions