In short. Anaesthesia and theatre time, drains and garments, returning to work and exercise, and two settling times: an implant over weeks, grafted fat over months.

Key points

  • Patients hear the word settled about both operations and it means different things.
  • An implant settles over weeks as the tissue adjusts to it and the swelling resolves.
  • Grafted fat settles over months, as the portion that will not survive is reabsorbed, so the size at three months is smaller than the size at two weeks.

Both operations are performed under anaesthesia, both take theatre time, and both ask for a period of restricted activity afterwards. Recovery is where the two part company, because an implant settles over weeks while a fat graft continues to change over months.

The anaesthetic

An implant is usually placed under general anaesthesia, occasionally with a regional block for postoperative comfort. Fat transfer needs general anaesthesia or deep sedation with local infiltration, because it has two operative sites and takes longer. In both cases the anaesthetic is a substantial part of the risk of the day, given by a specialist who assesses you beforehand and monitors you throughout. Your medical history, your medicines — particularly anything affecting clotting — your allergies and any previous anaesthetic problems should be recorded before the morning of the operation rather than on it.

Theatre time, and why it varies

An implant operation takes less theatre time than a fat transfer, which never involves less than a harvest and a graft and may involve both breasts and several donor areas. Theatre and anaesthesia time shape what an operation costs, and they are also why a fat transfer plan is usually described in sessions rather than as a single date.

Two settling times, two different words

Patients hear the word settled about both operations and it means different things. An implant settles over weeks as the tissue adjusts to it and the swelling resolves. Grafted fat settles over months, as the portion that will not survive is reabsorbed, so the size at three months is smaller than the size at two weeks. Judging a fat transfer before three months means judging swelling; judging an implant before six months means judging an early stage of healing.

Drains, garments and the first weeks

Drains are used in some operations and not others, depending on the technique and the amount of dissection. A support garment is worn after both procedures: after an implant to support the tissues while they adjust, after fat transfer to compress the donor site and support the breast. The breasts are swollen and tender, the donor site is often the more uncomfortable of the two, and bruising takes two to three weeks to fade.

Return to work and to exercise

Desk work is usually possible within a week to two weeks, and a physical job takes longer in both cases. Strenuous activity and chest exercise are restricted for weeks rather than days, and the restriction is about protecting the result rather than about pain. Sensation in the breast and the nipple may change temporarily, and a donor site can be numb or irregular for months.

Reasons to call the team rather than wait

  • A breast that becomes rapidly swollen, tense and painful, or a collection that appears around an implant.
  • Fever, spreading redness, warmth or discharge from any incision or donor site.
  • Shortness of breath or chest pain, which needs emergency care immediately rather than a routine appointment.

The final judgement of either operation belongs at six to twelve months, when the swelling has gone, the fat that is going to be reabsorbed has been, and the scars are maturing. Anything decided about the result before that point is decided on a photograph of a process rather than on an outcome.

Related reading

Frequently asked questions

What anaesthetic is used for these operations?

An implant is usually placed under general anaesthesia, sometimes with a regional block for postoperative comfort. Fat transfer needs general anaesthesia or deep sedation with local infiltration, because it has two operative sites and takes longer. In both cases a specialist assesses you beforehand and monitors you throughout.

How long before I can go back to work and to exercise?

Desk work is usually possible within a week to two weeks after either operation, and a physical job takes longer. Strenuous activity and chest exercise are restricted for weeks rather than days, and the restriction protects the result rather than being about pain. Your own team's instructions take precedence over any general timeline.

When can I judge the result?

For an implant, the shape at six weeks is closer to the final one than patients expect, and the result is judged at six to twelve months. For fat transfer, the size at three months is smaller than the size at two weeks, and the final volume is judged at six to twelve months once the retained portion has stabilised. Neither result should be assessed earlier.

Risks & Limitations

  • Implants are not lifetime devices: exchange or removal is likely at some point, and no surgeon can say how long a particular implant will remain in place.
  • Capsular contracture can make the breast firm, uncomfortable or distorted, and rupture of a gel-filled implant may produce no symptom at all.
  • An implant-associated lymphoma of the capsule is rare; a persistent swelling or collection around an implant is drained and examined rather than watched.
  • Grafted fat is partly reabsorbed. How much survives cannot be guaranteed, under-correction is the commonest disappointment, and a second session is common.
  • Fat necrosis, oil cysts and calcification can follow fat transfer and can make later mammography harder to read. Both options change breast imaging.
  • Infection, bleeding, asymmetry, altered nipple or breast sensation, and permanent scars that mature over a year occur with both operations.
  • A fat-transfer donor site is a second surgical area, with its own bruising, compression garment and risk of contour irregularity.
  • Revision is a further operation on tissue that has already been operated on, and it carries added risk rather than removing the risk of the first.

When to Seek Care

  • Shortness of breath or chest pain — seek emergency care immediately.
  • Fever, spreading redness, warmth or discharge from an incision or a donor site — contact the team the same day.
  • A breast that becomes rapidly swollen, tense and painful, or a collection of fluid that appears around an implant.
  • A breast that becomes hard, tender or newly distorted, or a change in the shape of an implant that does not settle.
  • Any new lump, skin dimpling, nipple discharge or change in the nipple or areola — assessed on its own merits, whether or not you have had surgery.

References & Further Reading

  • American Society of Plastic Surgeons (ASPS) — breast augmentation and implant surveillance guidance
  • International Society of Aesthetic Plastic Surgery (ISAPS) — global standards of practice
  • National Institute for Health and Care Excellence (NICE, UK) — relevant guidance
  • Cochrane Library — systematic reviews in breast surgery and fat grafting

Medically reviewed by Tongchun Mao, MD (毛彤春), Deputy Director & Head of Aesthetic Surgery. Last reviewed: 19 September 2026.

This page is patient education, not medical advice, and it does not cite individual studies. Discuss your own case with a qualified clinician. To arrange an assessment at Chongqing West District Hospital, see Contact & Consultation.