In the 1980s, the models of the Third and of the Fourth generations of breast implant devices were sequential advances in manufacturing technology, such as elastomer-coated shells that decreased gel-bleed (filler leakage), and a thicker (increased-cohesion) filler gel. Sociologically, the manufacturers of prosthetic breasts then designed and made anatomic models (natural breast) and shaped models (round, tapered) that realistically corresponded with the breast- and body- types of women. The tapered models of breast implant have a uniformly textured surface, which reduces the rotation of the prosthesis within the implant pocket; the round models of breast implant are available in smooth-surface- and textured-surface- types.

Subpectoral (dual plane): the breast implant is emplaced beneath the pectoralis major muscle, after the surgeon releases the inferior muscular attachments, with or without partial dissection of the subglandular plane. Resultantly, the upper pole of the implant is partially beneath the pectoralis major muscle, while the lower pole of the implant is in the subglandular plane. This implantation technique achieves maximal coverage of the upper pole of the implant, whilst allowing the expansion of the implant's lower pole; however, “animation deformity”, the movement of the implants in the subpectoral plane can be excessive for some patients.[79]

“I’ve found that sometimes MRIs are not actually very reliable. In some instances, a patient’s MRI said the silicone gel implant had ruptured, and then when I went in to operate on it, it actually hadn’t. I’ve had one or two patients where an MRI showed the implant wasn’t ruptured, but based on my clinical exam I really thought there was a concern, so I went in and it turned out it was ruptured.”
Women who are experiencing mild sagging, yet still will benefit from a breast lift, are often good candidates for a peri-areolar lift. This involves a circular incision running around the edge of the areola, and like the crescent lift, is commonly performed in conjunction with breast augmentation. This lift can also be effective in helping reduce areola size. The resulting scar traces the edge of the areola.
Silicone implant rupture can be evaluated using magnetic resonance imaging; from the long-term MRI data for single-lumen breast implants, the European literature about second generation silicone-gel breast implants (1970s design), reported silent device-rupture rates of 8–15 per cent at 10-years post-implantation (15–30% of the patients).[45][46][47][48]
The cause of capsular contracture is unknown, but the common incidence factors include bacterial contamination, device-shell rupture, filler leakage, and hematoma. The surgical implantation procedures that have reduced the incidence of capsular contracture include submuscular emplacement, the use of breast implants with a textured surface (polyurethane-coated);[55][56][57] limited pre-operative handling of the implants, limited contact with the chest skin of the implant pocket before the emplacement of the breast implant, and irrigation of the recipient site with triple-antibiotic solutions.[58][59]
The breast augmentation patient usually is a young woman whose personality profile indicates psychological distress about her personal appearance and her bodily self image, and a history of having endured criticism (teasing) about the aesthetics of her person.[2] The studies Body Image Concerns of Breast Augmentation Patients (2003) and Body Dysmorphic Disorder and Cosmetic Surgery (2006) reported that the woman who underwent breast augmentation surgery also had undergone psychotherapy, suffered low self-esteem, presented frequent occurrences of psychological depression, had attempted suicide, and suffered body dysmorphia, a type of mental illness.
Fat is harvested from one part of your body, washed and purified, and then carefully reinjected with specially designed needles into the areas that need augmentation. It may be necessary to repeat the fat grafting procedure several times to achieve the desired result. Fat grafting can be explained as a three-stage process: (1) harvesting (2) purification and transfer and (3) placement.

4. Last but not least, your preference matters a lot!  Before surgery, I ask my patients to bring photos of buttock shapes that they like.  This helps me understand how much of a buttock size increase and shape each patient desires.  Some patients like a more curvy, rounded shape with wide hips (hour-glass figure) while others prefer a more projected or athletic shape.  Your preference of buttock outcome is a very important factor in the decision of how much fat is transferred, so I spend a lot of time with each patient before surgery to understand your goals and express what I think can be achieved.  Good communication between patient and surgeon is very important to achieving optimal surgical outcomes.

The current lifetime risk of BIA-ALCL in the U.S. is unknown, but estimates have ranged between estimated to be between 1 in 70,000 to 1 in 500,000 women with breast implants according to MD Anderson.[73] Certain geographic locations have demonstrated variable risks. For instance, a December 2016 update from the Therapeutic Goods Administration of Australia and New Zealand reported a risk of 1:1,000 to 1:10,000 for textured implants.".[71] To date (2017), there has not been a case of BIAL reported where the patient had only implantation of smooth shell breast implants or a textured tissue expander that was exchanged for a smooth implant. The paucity of cases reported in Asian populations has raised the possibility that there may be a range of genetic susceptibility to the phenomena, or alternatively merely reflect differences in how cases are identified and reported.