Implant Comparison

Breast Implants vs Fat Grafting

UNE Plastic Surgery · Dr. Kim Uigeon, board-certified plastic surgeon · Published 2026-09-21 · Updated 2026-09-21

1. How the two build volume

Implant augmentation places an FDA-approved silicone implant to create volume. The standard for new surgery today is Motiva and Mentor, placed subglandularly or at the muscle boundary (dual plane, subfascial). Because the placed cc is retained, the result volume can be planned fairly precisely before surgery. Autologous fat grafting purifies fat harvested by liposuction and injects it into the breast. The proportion of injected fat that connects to blood flow and survives is called the graft take, and it ranges 50–80% and varies by person — so the same amount injected leaves a different final volume from one patient to another.

2. Volume: trading certainty for naturalness

A 2020 systematic review from a University of Copenhagen team (22 studies, 2,073 patients, mean 21-month follow-up) offers the numbers (Ørholt et al., Plastic and Reconstructive Surgery, 2020).^[1] Fat-grafting augmentation injected a mean of 297 mL per patient, and 85.1% were done in a single operation. That is about 150 mL per breast, which — accounting for graft take — corresponds to a volume change of roughly a 200–250 cc implant. In short, fat grafting suits a natural increase between half a cup and one cup. To gain more than a cup for certain — especially in a lean body with little fat to harvest — an implant is the realistic choice.

3. Complications: safety by the data

In the same meta-analysis, clinical complications that a patient actually feels were rare: a palpable cyst in 2.0% (67.9% of them resolved by aspiration), infection 0.6%, hematoma 0.5%, seroma 0.1%. Even summed, major complications were 1.6%, and no patient required a reoperation.^[1] On the implant side, the representative complications are capsular contracture, implant rupture, and malposition. Lowering the risk with an aseptic protocol and technique is central, and it helps to know that correction methods are established when they occur. Neither method is a “surgery without complications” — it is more accurate to see each as managing a different kind of risk.

4. The screening angle: fat grafting’s hidden variable

One point deserves emphasis: screening. Reading a later mammogram can become ambiguous, and this should be known in advance. In the same study, imaging showed oil cysts in 6.5%, calcification in 4.5%, and fat necrosis in 1.2%. These are not felt in daily life, but they can affect mammogram interpretation: further imaging (BI-RADS 0/3) was advised in 16.4%, and a biopsy (BI-RADS 4) in 3.2%.^[1] Reassuringly, no case was diagnosed as malignant — but with fat grafting, periodic imaging and review with a breast radiologist must go together. This is also why high-volume fat grafting is not advised: the more injected at once, the more likely un-taken fat calcifies or becomes palpable and confuses screening. For the same reason, injectable fillers such as Aquafilling are off-label and not recommended.

5. Who suits which

Fat grafting tends to give higher satisfaction as a complement to an implant than as a stand-alone high-volume method — nothing fills a slightly empty cleavage or upper pole as well. The criteria:

• Fat grafting suits someone wanting a natural half-cup to one-cup increase, with enough fat to harvest, and an aversion to a foreign implant.
• An implant suits someone wanting a definite change of more than a cup, or a lean body with too little fat to harvest, or a predictable result from a single operation.
• Combining (hybrid) suits someone who wants an implant for base volume with fat grafting to fill a partial hollow at the cleavage or upper pole.

Common examples are partial fat grafting to gather the cleavage or to soften the implant edge.

Summary

• The two build volume differently. An implant keeps the placed cc; fat grafting keeps only the 50–80% that takes. They split on whether the result volume can be planned in advance.
• Fat grafting is realistic in the half-cup to one-cup range. In the 22-study, 2,073-patient meta-analysis, a mean of 297 mL was injected and 85.1% finished in one operation. For more than a cup for certain, or a lean body with little fat, an implant fits.
• Fat grafting adds a screening variable. In the same study, oil cysts (6.5%) and calcification (4.5%) showed on imaging, and further imaging was advised in 16.4%. No case was malignant, but periodic imaging and breast-radiology review must go together.

References

1. Ørholt M, Larsen A, Hemmingsen MN, et al. Complications after breast augmentation with fat grafting: a systematic review. Plast Reconstr Surg. 2020;145(3):530e–537e. doi:10.1097/PRS.0000000000006569. (22 studies, 2,073 patients; mean 297 mL injected; major complications 1.6%; oil cysts 6.5%; further imaging 16.4%.)