Breast-Augmentation-Techniques.Pdf
Total Page:16
File Type:pdf, Size:1020Kb
CME Breast Augmentation David A. Hidalgo, M.D. Learning Objectives: After studying this article , the participant should be able to: Jason A. Spector, M.D. 1. Assess patient physical characteristics that influence implant selection. 2. Adopt New York, N.Y. a system to aid in implant size selection. 3. Become cognizant of the advantages and disadvantages of incision, pocket plane, and implant options. 4. Understand implant positioning concepts and aseptic implant handling methods. 5. Manage untoward postoperative sequelae 6. Understand secondary surgery concepts. Summary: Breast augmentation is the most commonly performed aesthetic surgi- cal procedure. Choices of incisions, pocket plane, and myriad implant character- istics constitute the basis for surgical planning. Analysis of physical characteristics and inclusion of the patient in implant selection contribute to overall satisfac- tion and reduce requests for secondary surgery. Technical expertise in implant positioning and aseptic handling helps to prevent capsular contracture, implant malposition, and other shape problems. Despite the need for secondary surgery in some, patient satisfaction is high. (Plast. Reconstr. Surg. 133: 567e, 2014.) reast augmentation is the most common aes- personality and aesthetics. Anatomic limitations thetic surgical procedure, with more than must be explained to the patient. B300,000 performed in 2011.1 Choices of Height and weight influence implant selec- incisions, pocket plane, and implant characteris- tion. For example, tall patients require larger tics, including shape, texture, filler, and volume, volumes than short patients to achieve a similarly constitute the key decisions in surgical planning. proportioned result. Thin patients are not well Thoughtful analysis of physical characteristics and suited to saline implants. Idiosyncrasies in body patient participation in the process are the most morphology also play a role: patients with wide important factors in size selection. Knowledge of hips or shoulders look better with larger implants implant positioning and aseptic handling concepts compared with those who are narrower.5 contributes to successful outcomes and minimizes Chest wall shape is important to note.6 Pectus the need for secondary surgery. Patient satisfac- excavatum occurs occasionally, whereas pectus cari- tion is high with this procedure, despite significant natum and Poland’s syndrome are rare.7 Central reoperation rates to treat capsular contracture, deformities are typically ameliorated sufficiently by implant deflation, malposition, and other prob- breast augmentation alone. Deep pectus excavatum lems (References 2 and 3: Level of Evidence: deformities can be treated simultaneously with a cus- Therapeutic, IV).2,3 tom solid silicone implant made from a plaster mou- lage, but most patients decline this option. Poland’s ESSENTIALS OF PREOPERATIVE syndrome, when severe, may require adjunctive pro- ASSESSMENT AND MANAGEMENT cedures, such as tissue expansion, fat grafting, and latissimus muscle transfer.7,8 A round thorax shape Patient Evaluation makes the breast axes diverge, causing the breasts Each patient’s psychology, aesthetic sense, and to appear farther apart following augmentation. A anatomy must be critically assessed. Emotional sta- bility is a mandatory prerequisite.4 Style of dress, Disclosure: Neither author has a financial interest makeup, tattoos, piercings, previous aesthetic in any of the products or devices mentioned in this ar- procedures, community, and occupation reflect ticle. This work was not supported by outside funding. From the Division of Plastic Surgery, Weill Cornell Medical Related Video content is available for this arti- College. cle. The videos can be found under the “Related Received for publication April 9, 2012; accepted September Videos” section of the full-text article, or, for 21, 2012. Ovid users, using the URL citations published Copyright © 2014 by the American Society of Plastic Surgeons in the article. DOI: 10.1097/PRS.0000000000000033 www.PRSJournal.com 567e Plastic and Reconstructive Surgery • April 2014 rectangular thorax makes the axes parallel, so that with atrophic tissue and poor skin elasticity make the breasts appear closer together postoperatively.9 visual and tactile implant concealment challeng- Hemithorax asymmetry due to differences in shape ing, and also pose a risk of late lower pole descent. or relative protrusion can create an uneven breast Conservatively sized silicone implants are the best foundation, suggesting different size implants choice in these patients. A concomitant masto- despite equivalent breast volumes (Fig. 1).10 Sco- pexy allows excision of some of the inelastic lower liosis can cause vertical breast asymmetry requiring pole skin and enables placement of a smaller, thoughtful implant positioning to minimize it.11 lighter implant in more extreme cases. Existing breast volume influences implant Nipple hypertrophy and ptosis, common in filler choice. Small volume is not very compat- postpartum patients, may be improved by circum- ible with saline implants, but as volume increases, ferential skin excision at the nipple base. (See there is less difference between saline and silicone. Video, Supplemental Digital Content 1, which Breast shape may limit implant selection. demonstrates a nipple reduction. This video is Vertically short breasts are prone to lower pole available in the “Related Videos” section of the full- deformities as implant diameter increases. Simi- text article on PRSJournal.com or, for Ovid users, larly, breasts with constricted base diameters, at http://links.lww.com/PRS/A952.) Reduction in such as tubular breast deformity, are challenging both height and diameter can be achieved by the to aggressively augment and may require a more top-hat reduction method.16 Treating this condi- complex treatment strategy.12–14 tion is simple and enhances the overall result. Inframammary crease anatomy is also impor- Nipple-areolar position asymmetry is magni- tant. Minimal crease definition imposes little restric- fied by breast augmentation (Fig. 2). A unilateral tion on implant diameter selection, and therefore circumareolar mastopexy or a Y-scar mastopexy size. Glandular ptosis with a sharply defined crease can be considered depending on the severity of located close to the areola represents the oppo- the problem.17 site extreme. This type is prone to double-bubble The larger the areolar diameter, the more deformities as implant diameter increases.15 it tends to stretch following surgery. Conserva- Tissue characteristics and skin quality are tive circumareolar excision should be considered equally important factors. Postpartum patients with diameters approaching 6 cm. Circumareolar Fig. 1. Chest wall shape can affect the axes of the breasts and their relative projection. 568e Volume 133, Number 4 • Breast Augmentation Video 1. Supplemental Digital Content 1, which demonstrates nip- ple reduction, is available in the “Related Videos” section of the full- text article on PRSJournal.com or, for Ovid users, at http://links.lww. com/PRS/A952. excision must be coupled with a periareolar been proven in the subpectoral plane.19 Smooth purse-string suture, typically with nonabsorbable implants are currently used in approximately 90 suture material, in order to provide a lasting result. percent of patients in the United States.21 Round implants are used in 95 percent Implant Selection of patients in the United States today.21 Supe- Size (volume and diameter) is arguably the rior aesthetic results using anatomic implants most critical aspect of implant selection, followed remain unproven. Implant rotation requiring by filler type.Second-tier factors include shape, additional surgery can occur with these devices profile, and surface texture. ( Reference 23: Level of Evidence: Therapeu- The differences between textured and smooth tic, IV).22,23 Unlike in breast reconstruction, a dif- implants have been debated (Reference 19: Level ferent scenario, there is no clear role for anatomic of Evidence: Therapeutic, I).18,19 Current evidence implants in breast augmentation. holds that smooth implants are more prone to Implant profile is a variable that aids in achiev- capsular contracture in the subglandular plane.20 ing maximum volume in patients having narrow A difference between the two types has not chests, breast base diameters, or both. Higher Fig. 2. (Left) Preoperative nipple-areolar position asymmetry. (Right) The asym- metry is magnified following augmentation, but within acceptable limits. 569e Plastic and Reconstructive Surgery • April 2014 Size is usually the most important implant vari- able to the patient. Magazine photographs, cup sizes, and friends’ experiences are not reliable measures for determining size. One recommended method computes optimal size based on breast base width, anterior skin stretch, upper pole pinch thickness, inframammary fold pinch thickness, and stretched nipple-to-fold distance.24–26 This ana- lytic method determines optimal implant dimen- sions based on individual anatomic characteristics. Preoperative sizing is another method that is more subjective in its approach. It consists of plac- ing sample implants in a bra to preview a range of possible results.27 The surgeon first determines a size range suggested by height, weight, and body habitus that is also mindful of breast anatomy restrictions. This process shares ownership of the final decision between the patient and the sur- geon. It has been shown to minimize