What breast augmentation involves, from implant choice to recovery and long-term care.

Breast augmentation increases the size and fullness of the breasts, usually with an implant placed behind the breast tissue.¹ Common reasons include naturally small breasts, loss of volume after pregnancy or weight loss, and asymmetry between the two sides.²

Augmentation adds volume but does not lift a breast that sags. When the nipple has dropped well below the crease beneath the breast, a breast lift, or mastopexy, is usually needed as well.¹ Fat grafting can be used alone for a modest increase or together with an implant to refine shape.^1,9

The benefit patients report is large. Across 39 studies, BREAST-Q scores for satisfaction with the breasts rose from 26.3 to 72.7, and psychosocial and sexual well-being rose by similar amounts, while physical well-being changed little.³

Candidates are healthy adults with realistic expectations who want larger or more balanced breasts.² Surgery is generally not offered before age 18, and in the United States silicone gel implants are approved for cosmetic augmentation from age 22.^2,10

Surgeons look for reasons to delay or avoid surgery, such as active breast disease, a major life upheaval, pressure from a partner or family, and body dysmorphic disorder.² Women over 40 usually have a screening mammogram first.¹⁰ In a national database of 6,515 patients, a body mass index of 25.2 or higher was associated with more 30-day complications, 4.3% vs 1.3%.¹¹

Planning is built around each person's tissue rather than a target cup size alone. The width of the breast, the thickness of the soft tissue and the position of the nipple and breast crease guide the implant size and the pocket, and about 2 cm of pinched tissue is usually considered the minimum for placing an implant above the muscle.^1,10

• Saline: The implant is filled with sterile salt water, often through a smaller incision, and a rupture is easy to recognize because the implant deflates.^1,2
• Silicone Gel: Modern cohesive gel is far more cross-linked than early silicone, but a rupture is often silent and needs imaging to detect.^1,12
• Shape: Round implants are the most common, while anatomic or teardrop implants are fuller at the bottom and must stay correctly oriented.^1,2
• Surface: Textured shells lowered capsular contracture in a meta-analysis of primary augmentation, 3.80% - 5.27% vs 15.56% for smooth implants, but texture is linked to BIA-ALCL.^13,14

No pocket suits everyone. Thin tissue favors more coverage under the muscle, while adequate tissue allows placement above it.¹ In one surgeon's direct comparison of 386 breasts, subfascial placement had less capsular contracture than subpectoral placement, 1.1% vs 5.2%, along with less lateral displacement and no double bubble deformity.¹⁷ Placement under the muscle can cause animation deformity, visible movement of the implant when the chest muscle contracts, which can be corrected by moving the implant to a different pocket.^15,18

• Inframammary: The incision sits in the crease beneath the breast and gives the most direct view of the pocket. In large implant studies it carried less contracture risk than the periareolar incision.^2,19
• Periareolar: The incision follows the lower edge of the areola, where the color change helps hide the scar.^1,2
• Transaxillary: The incision is in the armpit, leaving no scar on the breast. A 2026 meta-analysis of 11,686 breasts found contracture in 2.3% and no difference from other incisions.²⁰
• Transumbilical: Placement through the belly button is generally not recommended, and the FDA describes it as an incision site not approved for implant placement.^2,12

• Anesthesia: Augmentation is usually an outpatient operation under general anesthesia, with a single dose of antibiotic before surgery.^2,10
• Implant Selection: The implant is chosen from the breast measurements and the patient's goals. A common rule of thumb is about 125 - 150 cc per cup size, and implants larger than 400 cc carry more complications.²
• Pocket: The surgeon creates a pocket in the chosen plane, sized to the implant so it sits in the correct position.^1,2
• Contamination Control: Antibiotic irrigation of the pocket and no-touch insertion through a funnel aim to keep bacteria off the implant. A systematic review found a lower contracture rate with funnel insertion, relative risk 0.42.^21,22
• Closure: Drains are usually not needed in cosmetic augmentation.²
• Length: In a national database of 6,531 patients, operations longer than 91 minutes were associated with more complications.⁷

Recovery is rarely measured directly in studies, so the typical course below comes from surgical textbooks and varies with the pocket and the surgeon's protocol.²

In a randomized trial of 225 women, starting exercise 1 week after surgery did not change complications, 6.9% vs 7.5% with standard restrictions, or scar quality at 1 year, and satisfaction scores were higher in the exercise group.²³

Early complications are uncommon. In a national database of 6,531 patients, 1.8% had a complication within 30 days, most often a return to the operating room.⁷ Most long-term issues relate to the implant itself, which is why the FDA states that patients should expect additional surgery over their lifetime.⁴

Capsular contracture is tightening of the scar capsule that normally forms around any implant, graded from soft (Baker I) to hard, painful and distorted (Baker IV).^1,10 A review of 40 studies identified subglandular placement, hematoma and longer time since surgery as risk factors.²⁵ Mild cases may need no treatment, while firm or painful ones are usually treated by releasing or removing the capsule, often with an implant exchange.²¹

Breast implant-associated anaplastic large cell lymphoma, or BIA-ALCL, is a rare lymphoma of the immune system that develops in the fluid or capsule around an implant, not a cancer of the breast tissue.^1,14 It usually appears years later as new swelling from fluid around the implant, and treatment is complete removal of the capsule and implant.¹ In a Danish cohort followed for a median of 17 years, the rate with textured cosmetic implants was 2.83 per 100,000 person-years, and no textured implant was free of risk.²⁴ The FDA has also received rare reports of squamous cell carcinoma and other lymphomas in the capsule.¹²

Some people with implants report fatigue, joint and muscle pain or difficulty concentrating, often called breast implant illness. No definitive link has been established, and a meta-analysis of 10,519 patients found these symptoms more often with silicone or ruptured implants.²⁶ In a prospective study, 88% of patients who had their implants removed for these symptoms reported at least partial improvement at 1 year, regardless of how the capsule was removed, while blood and tissue tests showed no consistent differences.²⁷ A systematic review in Annals of Internal Medicine found the evidence inconclusive for any association between silicone gel implants and long-term disease.²⁸

Most silicone ruptures cause no symptoms. The FDA identifies MRI as the most effective test for silent rupture and ultrasound as an acceptable screening alternative for people without symptoms.¹² Implants do not raise the risk of breast cancer, but they can make mammograms harder to read, less so when the implant is under the muscle.¹⁰

Breastfeeding is possible for most women with implants. In a meta-analysis, 8,197 / 9,965 women with implants breastfed successfully, a lower proportion than women without implants.²⁹

Satisfaction is high and durable. In the BREAST-Q meta-analysis, sexual and physical well-being continued to improve over the long term, while psychosocial well-being peaked early after surgery.³ Aesthetic results depend on proportion. In crowdsourcing studies of how breasts are perceived, alignment with a few measurable features, such as projection and nipple direction, correlated strongly with how attractive augmented breasts were rated.^30,31

Implants age, and the breasts around them continue to change with time, weight and pregnancy. In the 10-year Sientra core study, the leading reasons for reoperation were a change in style or size and capsular contracture.⁶ The longer implants are in place, the more likely they are to need removal or replacement.⁴

Fat grafting moves fat from another part of the body to the breasts. In a review of 35 studies and 3,757 women, about 58% of the injected volume was retained on average, complications occurred in 27.8%, mostly fat necrosis, and satisfaction after 1 year averaged 92%.⁹ It suits modest increases, and in a meta-analysis overall satisfaction was 13.0 points higher with implants.³²

A breast lift without an implant reshapes and raises a sagging breast when added volume is not the goal.¹

• Implant Lifespan: How long a modern implant lasts in any one person cannot be predicted, and the FDA states that implants are not lifetime devices.^4,5
• BIA-ALCL Incidence: Estimates vary widely because implant exposure and long-term follow-up are hard to track.^14,24
• Systemic Symptoms: The cause of symptoms attributed to implants, and who will improve after removal, remain unclear.^26,27
• Best Pocket: Studies comparing pockets mostly carry a high risk of bias, and few are randomized.^15,16
• Long-Term Health: For most long-term health outcomes, too few well-adjusted studies exist to reach a conclusion.²⁸