Fat Grafting in Plastic Surgery

Dr Tavakoli discusses why fat grafting is becoming more popular in plastic surgery.
Dr Tavakoli uses fat grafting for facial surgery, breast surgery, and buttock augmentation surgery.

Fat retention rates: what the science shows (40 to 70%)

One of the most clinically significant variables in fat grafting is retention rate: the proportion of transplanted fat that survives and remains in the recipient area after the reabsorption phase. Published peer-reviewed research consistently reports fat retention rates in the range of 40 to 70% at 12 months post-procedure.

The 40 to 70% range is a population-level clinical finding, not a prediction for any individual patient. Where a patient’s result falls within this range depends on a combination of surgical, anatomical, and lifestyle factors outlined below. Patients should not plan their volume goals based on the upper bound of this range.

Factors that affect retention

Multiple variables influence whether transplanted fat cells survive the engraftment process. The most clinically significant factors include:

• Recipient site vascularity: Fat cells depend on rapid vascular ingrowth to survive. Areas with good blood supply support higher retention. Previously irradiated tissue — common in reconstruction patients — has reduced vascularity and lower graft survival rates.
• Injection volume and technique: Injecting fat in small aliquots across multiple tissue planes maximises contact between graft cells and host tissue. Large-volume injections in a concentrated area increase the risk of central necrosis and reabsorption.
• Fat processing method: The way harvested fat is processed before injection influences cell viability. Centrifugation, washing, and filtration methods each carry different evidence profiles.
• Smoking status: Smoking impairs vascular function and reduces the body’s capacity for tissue repair, which can negatively affect fat graft survival. Patients are typically advised to cease smoking well in advance of surgery.
• BMI and metabolic factors: Significant weight fluctuations after fat grafting can affect the retained volume, as transplanted fat behaves like native fat tissue and responds to weight change.
• Post-operative compression: Compression of the recipient area in the early post-operative period can reduce the space available for engraftment. Your surgeon’s instructions regarding garments and positioning are important for optimising retention.

Where fat grafting is used

Fat grafting is applied across a range of anatomical areas and clinical indications. The table below summarises the primary use cases relevant to breast and body surgery, the typical patient profile for each, the approximate volume range achievable per session, and the key clinical considerations.

Breast augmentation (natural)

For patients seeking breast augmentation without implants, fat transfer — or natural breast augmentation using lipofilling — offers an autologous alternative. It is best suited to women who want a modest, natural-feeling increase in volume, have sufficient donor fat at a harvest site, and are comfortable with the possibility of staged sessions to achieve their goals.

Candidates considering this approach should have a thorough breast augmentation consultation to assess donor availability, tissue characteristics, and whether fat grafting is clinically appropriate as a standalone option or in combination with another approach.

Breast reconstruction post-mastectomy

Fat transfer is used in breast reconstruction post-mastectomy to add volume, improve the texture and appearance of reconstructed tissue, and soften the result of implant-based reconstruction. It is frequently used in combination with acellular dermal matrix (ADM), as detailed in the guide to breast revision with ADM, and is typically performed in staged sessions to build volume progressively.

In patients who have received radiation therapy to the chest wall, fat grafting can also improve tissue quality over time, though retention rates in irradiated tissue are generally lower, and the number of sessions required is typically higher.

Body contouring

Beyond the breast, fat grafting is used to correct contour irregularities resulting from previous liposuction, traumatic defects, or post-surgical depressions. It is also used for buttock contouring in suitable candidates. Recovery in body contouring applications involves both the donor harvest site and the recipient area, and patients should plan for restrictions at both sites during the post-operative period.

Facial rejuvenation

Fat grafting to the face is used to restore age-related volume loss in the midface, temples, and periorbital areas. The volumes involved are significantly smaller than in breast applications, and the technique requires precision to avoid surface irregularities. Facial fat grafting is sometimes used alongside other facial procedures as part of a combined approach to facial rejuvenation.

Fat grafting vs implants: when to choose which

The choice between fat grafting and breast implants depends on your anatomy, volume goals, preference for foreign material, and clinical suitability. Neither option is universally superior. Each has distinct advantages, limitations, and ideal candidate profiles. The comparison table below outlines the key clinical differences.

You can also review the 2025 guide to breast implant placement to understand the implant-based options available before your consultation.

Recovery and results

Because fat grafting involves two surgical sites, the donor harvest area and the recipient area, recovery involves managing both simultaneously. The following is a general guide to what patients typically experience. Your surgeon will provide specific post-operative instructions relevant to your procedure.

Donor site recovery

The liposuction donor site will experience swelling, bruising, and tenderness for one to three weeks. Compression garments are typically worn over the donor area for several weeks post-operatively. Most patients find that the donor site causes more noticeable initial discomfort than the breast recipient area.

Breast recipient site recovery

The breast area will be swollen and tender immediately following surgery. Initial swelling is partly due to the injected volume, which will reduce as excess fluid is absorbed and the reabsorption phase occurs. The final retained volume is generally assessed at three to six months post-procedure, once the engraftment phase has stabilised.

Return to activity

Most patients return to light activities and sedentary work within one to two weeks. Strenuous exercise and heavy lifting are typically restricted for four to six weeks. Specific restrictions will depend on both the harvest site and the recipient area treated.

Imaging after fat grafting

Fat grafting to the breast can produce calcifications on imaging that require specialist radiological assessment to distinguish from pathological findings. Patients should inform their radiologist of prior fat grafting procedures. Routine mammographic screening should be maintained on schedule. If you are considering implant removal and fat grafting as an alternative, the breast implant removal guide provides relevant context on the transition between approaches.

Frequently Asked Questions

How much volume can fat grafting add to the breasts?

In a single session, most patients can expect a volume increase roughly equivalent to one bra cup size. The achievable volume depends on how much fat is harvested, the individual retention rate, which published research places in the 40 to 70% range, and the starting anatomy. Patients seeking a larger increase may require two or more staged sessions several months apart.

Why do fat retention rates vary so much after fat grafting?

Retention is influenced by the vascularity of the recipient site, the injection volume and technique used, the patient’s metabolic factors and smoking status, whether the recipient tissue has been previously irradiated, and the fat processing method. These variables combine to produce individual outcomes across the published 40 to 70% range. Your surgeon will discuss where your specific circumstances may position your result within this range.

Can I have fat grafting if I already have breast implants?

Yes. Fat grafting is used alongside existing implants to improve contour, soften visible borders or rippling, and increase soft tissue coverage over the implant. This is a distinct use case from standalone fat transfer augmentation and requires a specific clinical assessment. It may be considered as part of a breast revision procedure.

What areas of the body are fat taken from?

Fat is harvested from donor areas with sufficient available volume, most commonly the abdomen, flanks, thighs, and lower back. The selection of the donor site is based on your individual anatomy and where adequate fat can be safely harvested. The donor liposuction site adds a second recovery area that patients need to plan for postoperatively.

Is the result from fat grafting permanent?

Fat that survives the initial engraftment phase behaves like normal fat tissue and is considered stable. However, it is subject to the same responses as body fat elsewhere: significant weight gain or loss can affect the retained volume. There is no device involved with a defined lifespan, but results are not immune to the effects of weight change and ageing.

What is the difference between fat grafting and lipofilling?

Fat grafting, lipofilling, and fat transfer describe the same procedure. The technique involves harvesting fat via liposuction, processing it, and injecting it into a target area. Lipofilling is the term more commonly used in European and academic literature, while fat grafting and fat transfer are the more common terms used in Australia.

Is fat grafting suitable for breast reconstruction after mastectomy?

Yes. Fat transfer is an established technique in breast reconstruction post-mastectomy, used to add volume, improve contour, and soften the surface of implant-based reconstruction. In patients who have received chest wall radiation, retention rates may be lower, and staged sessions are often required. A detailed surgical assessment is needed to determine how fat grafting fits within an overall reconstruction plan.

Book a Consultation with Dr Tavakoli

Whether you are considering natural breast augmentation without implants, exploring fat grafting as part of a reconstruction plan, or looking to improve the result of an existing procedure, fat transfer requires a thorough clinical assessment to determine whether it is the right approach for your anatomy and goals.

At your consultation, Dr Tavakoli will assess your donor site availability, discuss realistic volume expectations based on the evidence for fat retention rates, and explain which approach is most appropriate for your individual circumstances.

To book a consultation, contact Dr Tavakoli’s team online or call 1300 368 107.