Incidence Of Capsular Contracture Research Articles

Breast cancer patients' postoperative outcomes in nipple-sparing mastectomy and reconstruction with subpectoral implant placement: a single center experience.

The continuous increase in the rate of nipple sparing mastectomy (NSM), the development of several reconstructive techniques and the following introduction of acellular derma matrix (ADM) has revolutionized implant-based breast reconstruction. This study aimed to investigate postoperative complications, health-related quality of life (HRQoL) and patients' satisfaction in patients undergoing NSM and breast reconstruction with or without ADM. Enrolled patients were divided into three groups: immediate breast reconstruction (IBR) with definitive implant and ADM (Group A), IBR only with definitive prosthesis (Group B), and two-stage breast reconstruction (Group C). The postoperative complications, BREAST-Q outcomes and reoperations were compared. A total of 105 BC patients were enrolled and a total of 139 post-mastectomy breast reconstructions were performed. Seroma was the most prevalent complication observed: 8.3% in Group A, 2.9% in Group B and 5.7% in Group C. Postoperative infection occurred in two patients of Group A (5.6%), one patient of Group B (2.9%) and one of Group C (2.9%). Group A reported larger drain volume (1,125±243.5 cc), longer drain period (13.2±2.8 days), and the lowest incidence of capsular contracture (5.6%). The BREAST-Q patient-reported outcome measures document that all patients aged ≥50 years presented a higher score in "Satisfaction with breast" (P<0.001) and "Satisfaction with outcome" domains (P<0.05). Performing a bilateral breast reconstruction was associated to higher scores in "Physical wellbeing chest domain" (P<0.05). In addition, patients in Group A and Group B reported higher score in "Satisfaction with the breast" domain (P<0.001) but only in Group B we reported a higher score in "Satisfaction with outcome" (P<0.001). Subpectoral IBR results in manageable complications and greater personal satisfaction. The ADM could improve breast reconstruction reducing the rate of capsular contracture. The prepectoral placement of ADM could minimize complications and optimize aesthetic results.

The impact of adjuvant radiotherapy for cosmetic results after immediate breast reconstruction based on the tissue expander and permanent implant

Background. One of the causes of complications in breast cancer patients after immediate breast reconstruction (IBR) is postmastectomy radiation therapy (PMRT).Aim. Retrospective analysis of the results of IBR, and evaluating the effect of PMRT on the frequency and type of complications.Materials and methods. Between 2015 and 2021, 798 patients underwent IBR with tissue expander or implant in N.N. Petrov National Medical Research Center of Oncology, Ministry of Health of Russia. PMRT was performed in 375 patients (group 1). The remaining 423 patients did not receive PMRT (group 2). Complications, including reconstructive failure (RF), Baker grade III/IV capsular contracture (CC), were recorded and analyzed.Results. Finally, cosmetic result analyzed in 521 patients. In 281 patients of PMRT group (group 1) IBR with expander or implant were performed in 144 and 137 cases, respectively. In the 240 patients without PMRT (group 2), IBR with expander was performed in 81 patients, with implant – in 159 cases. Pooled analysis revealed that overall rate of complications in the PMRT group was 33.8 % (in 95 of 281 patients), in non-irradiation patients – 22.9 % (in 55 of 240 patients), p &lt;0.01. In group 1, RF were recorded in 67 (23.8 %) patients, in group 2 – in 44 (18.3 %) patients, p &gt;0.05. CC in group 1 were detected in 28 (10 %) patients, in group 2 in 11 (4.6 %) patients, p &lt;0.05. In patients with permanent implants RF were detected in 21 (14.6 %) of irradiation patients and in 22 (13.8 %) non-irradiation patients (p &gt;0.2). On the contrary, CC were mentioned in 22 (16.1 %) of irradiated patient and in 8 (5 %) patients that didn’t receive PMRT, p &lt;0.005. After reconstruction with expander RF were diagnosed in 46 (31.9 %) patients after PMRT and in 22 (27.2 %) non-irradiation patients, p &gt;0.2. CC were observed in 6 (4.2 %) patients from PMRT group and in 3 (3.7 %) patients treated without PMRT, p &gt;0.2.Conclusion. PMRT in patients after IBR with simultaneous installation of a permanent implant is characterized by a decrease in the incidence of RF, but an increase in the incidence of CC.

A Multi-Center Retrospective Observational Analysis of Three-Year Experience of Our Protocol for Prevention and Monitoring of Surgical Site Infections in Implant-Based Breast Reconstruction.

With the rise in the mastectomy rate, the number of patients who choose to undergo postmastectomy reconstruction has been increasing, and implant-based procedures are the most performed methods for postmastectomy breast reconstruction. Among the possible complications, the most feared is the loss of reconstruction. It can be related to several reasons, but one of the most common is infection of the implant, which can lead to prolonged antibiotic treatment, undesired additional surgical procedures, increased incidence of capsular contracture, and unsatisfactory aesthetics results, with a huge psychological impact on patients. The primary intent of this study is to analyze the status of infection rates at our institution and evaluate the effectiveness of our prevention protocol since its introduction. Secondly, we compared data of the surgical site infections (SSIs) after implant-based breast reconstruction at Trieste Hospital, where the protocol has been employed since 2020, and in another center, where plastic surgeons of our team are involved, with different prevention procedures. We enrolled 396 female patients, who underwent implant-based breast reconstruction, using definitive mammary implants or breast tissue expanders, with or without ADM (acellular dermal matrix), both for breast cancer and risk-reducing surgery in BRCA1/2 patients. Patients treated at the Hospital of Trieste, with the use of the prevention protocol, were considered the experimental group (group 1), while patients treated in Gorizia by the same breast team with standardized best-practice rules, but without the use of the prevention protocol, were considered the control group (group 2). Infected patients were 5 in the first group (1.7%) and 8 in the second one (7.9%), with a global infection rate of 3.2%. After the introduction of our prevention protocol, we faced a lower incidence of infection after breast surgery with implants or tissue expanders.

A comparison of textured vs smooth surfaced implants in sub fascial breast augmentation.

Subfascial placement of breast implants has the advantages of subglandular and submuscular placement without the adverse outcomes. This study examined the differences in outcomes between textured and smooth implants. A total of 385 patients underwent subfascial breast augmentation in two cohorts. The initial series (n=209) employed textured implants and the second (n=176) employed smooth implants. In all other respects, patient management was identical. Adverse outcomes, changes in breast morphometry, and patient satisfaction were compared between the two groups. The follow-up period ranged from to 74-272 weeks for smooth implants (mean 164 weeks, STD 50.6) and 78-279 weeks for textured implants (mean= 186 weeks, STD=54). The incidence of capsular contracture was the same for smooth and textured implants (4.7% and 6.2%, P=.64). Changes in breast shape at the lower pole, patient satisfaction, and the incidence of other adverse outcomes were the same in both groups. Subfascial placement of smooth and textured breast implants yielded similar outcomes.

Outcomes in Subfascial versus Subglandular Planes in Breast Augmentation: A Systematic Review and Meta-Analysis.

Breast augmentation is the most commonly performed aesthetic surgery procedure in women worldwide. The use of the subfascial plane has been suggested to decrease the incidence of capsular contracture compared to the subglandular plane, while simultaneously avoiding the complication of animation deformity in the subpectoral plane. The aim of this systematic review and meta-analysis was to compare the adverse outcomes of subfascial compared to subglandular planes in breast augmentation. This review was registered a priori on OSF (https://osf.io/pm92e/). A search from inception to June 2023 was performed on Medline, Embase, and CENTRAL. A hand search was also performed. All randomized and comparative cohort studies were included that assessed the use of the subfascial plane for breast augmentation. Outcomes evaluated included the incidences of seroma, hematoma, infection, rippling, capsular contracture, and revision surgery. Ten studies were included in this systematic review. Three randomized controlled trials and seven comparative cohort studies were used for quantitative synthesis. There was a significant difference favoring subfascial compared to subglandular planes in the incidence of hematoma, rippling, and capsular contracture. All included studies had high risk of bias. The current evidence suggests that the subfascial plane for breast augmentation decreases risk of capsular contracture, hematoma, and rippling compared to the subglandular plane. Further randomized evidence with high methodological rigor is still required to validate these findings.

Revision Breast Reconstruction With Biologic or Synthetic Mesh: An Analysis of Post-Operative Capsular Contracture Rates

Abstract Background Both biologic and synthetic mesh have been found to reduce the risk for capsular contracture, yet there is limited data assessing the use of these scaffold materials in revision breast reconstruction surgery. Objectives This investigation sought to assess the ability of either biologic or synthetic mesh to prevent capsular contracture in the revision breast reconstruction population. Methods A retrospective chart review was conducted of implant-based revision reconstructions performed by the senior author between 2008 and 2023. Patient demographics and outcomes were assessed, including the incidence of Baker grade III or IV capsular contractures. Results were compared between biologic and synthetic mesh groups using univariate and multivariate analysis. Results Ninety-five breasts underwent revision reconstruction with 90 (94.7%) for correction of malposition, four (4.2%) for size change, and one (1.1%) for revision after additional oncologic breast surgery. Of these breasts, 26 (27.4%) used biologic mesh and 69 (72.6%) used synthetic mesh. Capsular contracture occurred in one (3.8%) biologic mesh breast and four (5.8%) synthetic mesh breasts. There was no significant difference in the incidence of capsular contracture between the two groups (p=1.000). None of the recorded demographics were risk factors for capsular contracture, including the use of biologic or synthetic mesh (p=0.801). Conclusions Both biologic and synthetic mesh are successful at preventing capsular contracture in patients undergoing implant-based revision reconstruction. This adds to the growing evidence that both scaffold materials can be used in complex revision breast reconstruction to aid in preventing capsular contracture.

Abstract PO3-23-05: Capsular contracture after post-mastectomy radiotherapy in the patients undergoing implant-based breast reconstruction: impact of implant positioning and two-stage surgery

Abstract Background Capsular contracture is a significant concern in patients undergoing post-mastectomy radiotherapy (PMRT) following implant-based breast reconstruction. It negatively impacts cosmetic outcomes and can have a profound effect on the individual's quality of life. Our study aimed to explore whether the degree of capsular contracture varies based on the placement of the inserted implant and the type of operation (one- or two-staged). Patients and Methods This retrospective study was conducted at a single center, Ganganm Severance Hospital, Yonsei University College of Medicine, Seoul, South Korea. Our study included patients who underwent PMRT following total mastectomy and implant-based breast reconstruction surgery between January 2017 and September 2022. To assess the degree of capsular contracture, we evaluated the presence of capsular contracture, particularly severe capsular contracture classified as Baker grade 3 or higher, as well as implant migration. The implants were placed either in the pre-or sub-pectoral position, and the surgical approach employed was either direct-to-implant (DTI) or two-staged operation. Results A total of 195 patients were included in the study, with 83 (42.6%) patients in the pre-pectoral group and 112 (57.4%) patients in the sub-pectoral group. In addition, 116 underwent a two-stage operation, while 79 underwent DTI surgery. There was a significant difference in the occurrence of capsular contracture based on the implant placement, with 16 patients (19.3%) in the pre-pectoral group and 46 patients (41.1%) in the sub-pectoral group experiencing this complication (OR 4.142 [1.973-8.698]). Furthermore, the severity of capsular contracture differed significantly between the two groups, with 5 patients (6.0%) in the pre-pectoral group and 16 patients (14.3%) in the sub-pectoral group affected (OR 3.434 [1.153-10.227]). The incidence of capsular contracture was lower in the two-stage operation group compared to the DTI group (28 [23.9%] vs 34 [38.6%]; OR 3.064 [1.528-6.141]), and the severity of capsular contracture was also reduced (9 [7.7%] vs 12 [14.5%]; OR 2.854 [1.092-7.455]). There were no significant differences in other complications such as seroma and infection. In addition, sub-pectoral placement was identified as a significant risk factor for implant upward migration (OR 2.531 [95% CI, 1.263-5.071]). Conclusions Our findings suggest that pre-pectoral reconstruction and the two-stage operation are beneficial for patients who may undergo PMRT based on their initial nodal stage. These approaches can help reduce the incidence of capsular contracture and abnormal implant migration following radiation, leading to improved aesthetic outcomes and greater patient satisfaction. Citation Format: Sohyun Moon, Kyunghyun Min, Jung Hwan Eom, Yoonwon Kook, Seung Ho Baek, Junghyun Kim, Min Ji Kim, Seung Eun Lee, In Sik Yun, Tai Suk Roh, Soong June Bae, Joon Jeong, Young Seok Kim, Sung Gwe Ahn. Capsular contracture after post-mastectomy radiotherapy in the patients undergoing implant-based breast reconstruction: impact of implant positioning and two-stage surgery [abstract]. In: Proceedings of the 2023 San Antonio Breast Cancer Symposium; 2023 Dec 5-9; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2024;84(9 Suppl):Abstract nr PO3-23-05.

A Comparison of Capsular Contracture Rates after Implant-Based Breast Reconstruction Using ADM Versus Synthetic Mesh

Abstract Goals/Purpose Capsular contracture is a local complication in which there is tightening of the capsule around the implant. This complication has been shown to occur in 15-30% of implant-based breast reconstruction patients and often requires revision surgery for correction. Prior investigations have suggested that the use of ADM can reduce the risk for development of capsular contracture, with more recent research suggesting that synthetic mesh may provide the same benefit. Several meta-analyses have attempted to compare ADM and mesh use for the prevention of capsular contracture, but they all emphasize the continued need for clinical investigation with direct comparisons. The goal of this study is to assess our own reconstruction patient population to compare capsular contracture rates between ADM and mesh cohorts, as well as to assess for other potential risks that may increase the rate of capsular contracture in these patients. Methods/Technique A 15-year retrospective review of all implant-based breast reconstructions performed by the senior author was performed. All operations occurred between 2008 and 2023 in a hospital setting. Patient demographics were assessed including age, BMI, implant size, radiation history, location of malposition, and use of either ADM or mesh. Post-operative complications including incidence of capsular contracture were recorded. Patients who had documented capsular contracture prior to scaffold insertion were excluded from the study. Wilcoxon signed rank test, 2-sided t-test, and Fischer’s Exact test were used to compare baseline demographics and capsular contracture rates between the two groups, along with a multivariate logistic regression analysis to control for potential confounders. Results/Complications Fifty-two breasts underwent capsulorraphy, of which 25 (48.1%) used ADM and 27 (51.9%) used mesh. Average age was 50.6 years, average BMI was 27.7, average implant size was 541.8 cc, and eight breasts (15.4%) had been irradiated. Average follow-up time was seven years (mean = 85.4 months, range 22 – 149 months, SD = 35.9). Fourteen (26.9%) capsulorraphies were for inferior malposition, 13 (25.0%) for lateral malposition, and 25 (48.1%) were for inferolateral malposition. Patients in the ADM group had significantly more lateral malposition prior to insertion as compared to the mesh group which had more inferior malposition (p=0.0246). There was no significant difference between the two groups for any other recorded baseline demographic; these demographics included age, BMI, hypertension, diabetes, history of tobacco use, radiation, chemotherapy, implant volume, and implant surface texture. Capsular contracture occurred in 2 ADM breasts (8.0%) and 4 mesh breasts (14.8%) with no significant difference between the two groups (p=0.6695). Five of these capsular contractures had documented Baker grades with three grade II, one grade III, and one grade IV. None of the recorded baseline demographics significantly increased the risk for capsular contracture development. Conclusion ADM and synthetic mesh both function as effective tools for reducing the risk of developing capsular contracture after prosthetic breast reconstruction. The rate of capsular contracture with ADM was only 8.0% and the rate with mesh was only 14.8%. Both rates are lower than the 15-30% incidence that has been found in breast reconstruction patients without mesh. None of the patient demographics were significant risk factors for capsular contracture development, so these are unlikely to be confounders. There was no significant difference in rate of capsular contracture between the two groups, suggesting that ADM and mesh are similarly efficacious at preventing capsular contracture in reconstruction patients.

Comparison between Pre-Pectoral and Post-Pectoral Implant Reconstruction and Different Radiation Modalities on Breast Reconstruction Complications

Single Stage direct to implant (DTI) is a rising reconstruction approach. It has been speculated that prepectoral implant placement reduces reconstruction complications as well as using newer postmastectomy radiation (PMRT) modalities as protons. Largest series in this topic included 350 DTI patients with less than 30 patients receiving PMRT. We reviewed the charts of 2,187 patients (pts) who underwent mastectomy and reconstruction at our institution between 2000 and 2020. Pts only receiving DTI with and without PMRT were included. PMRT was delivered either with 3D conformal photon +/- chest wall electron boost (CWB) or proton therapy mainly with pencil beam scanning. All pts received conventional fractionation (50-50.4 Gy in 25-28 fractions). Patients on active protons clinical trials were excluded. Primary endpoints were reconstruction complications defined as infection/necrosis (I/N) requiring debridement; capsular contracture (CC) requiring capsulotomy and overall reconstruction failure (ORF: removal of permanent implant for any complication with and without salvage reconstruction). Subgroup analysis for pts receiving PMRT was done to explore impact of proton and photons on complications. Logistic and cox regression were used. Eight hundred nine pts received DTI, with an overall median follow-up of 6.2 years. Among the entire cohort, 78/809 (9.7%) had prepectoral implants while the rest had subpectoral implants with and without alloderm support. Of the entire cohort 391/809 (48.5%) received PMRT, among those 43/391 (11%) received protons. The 5 years cumulative incidence of CC was 8.5% and 6.6% among prepectoral vs subpectoral implants (HR = 1.2, p = 0.7). The 5 years cumulative incidence of ORF was 32.2% and 28.2% among prepectoral vs subpectoral implants (HR 1.1, p = 0.6). For pts receiving PMRT, the 5 years cumulative incidence of CC were 26.0% and 8.6% among protons vs photons (HR 3.7, p < 0.0005). The 5 years cumulative incidence of ORF were 38.2% and 30.1% among protons vs photons (HR 1.4, p = 0.2). Multivariable logistic regression analysis accounting for BMI, smoking history, diabetes, and PMRT showed no significant difference between prepectoral implants versus subpectoral coverage for CC (OR = 0.7, p = 0.5), and for ORF (OR = 0.9, p = 0.8). Subgroup multivariable analysis for those receiving PMRT only showed protons compared to photons significantly increased the risk of CC (OR = 5.3, p < 0.0001) and ORF (OR = 2.1, p = 0.03). No significant difference in I/N was noted between photons and protons or between prepectoral and subpectoral pts. For breast cancer patients receiving single stage direct to implant reconstruction with and without PMRT, prepectoral implant placement did not reduce the risk of complications. Proton therapy compared to photons significantly increased the risk of capsular contracture requiring capsulotomies and significantly increased overall reconstruction failures with implants removal.

Implant-Based Breast Reconstruction: Impact of Body Mass Index on Postoperative Complications and Aesthetic Results: A 5-Year, Single-Center Study.

Increasing adoption of implant-based breast reconstruction (IBR) has raised expectations regarding postoperative outcomes and aesthetic results. BMI has been extensively explored as a predictor of complications. This study is the first to examine complication rates in underweight subjects, and compares these rates among underweight, normal weight, overweight, and obese patients. The aim of this study was to investigate the influence of BMI on postoperative complications and aesthetic results in IBR following mastectomy. Retrospective analysis encompassed patients undergoing mastectomy with subsequent IBR, performed by a collaborative team of breast and plastic surgeons. Demographics, treatment specifics, and outcomes were evaluated by univariate and multivariate regression models. Significance was determined at P < .05. In total, 1046 IBRs were performed in 921 patients, of whom 63 had a BMI <18.5 kg/m2, 572 were normal weight, 215 were overweight, and 71 were obese. Significantly higher complication rates were observed in both obese and overweight patients compared with normal-weight patients (P < .001). Each unit increase in BMI correlated to 7% increased odds of overall complications and 13% increased odds of reconstructive failure. Underweight individuals had higher capsular contracture rates than normal-weight patients, 14.3% vs 3.65%, respectively (P = .001). In addition, aesthetic complications rates in underweight patients were higher than in normal-weight patients, 36.4% vs 25.7%, respectively (P < .05). This study confirmed BMI to be a strong predictor of postoperative complications and aesthetic outcomes, and demonstrates that low BMI has a significant impact on the incidence of capsular contracture and aesthetic complications.

Incidence of capsular contracture on irradiated acellular dermal matrices (ADMs)-assisted prepectoral breast reconstructions

Tania Saibene, Claudia Cecconi, Maria Cristina Toffanin, Matteo Cagol, Massimo Ferrucci, Raffaello Grigoletto, Silvia Michieletto

Pre-pectoral Breast Reconstruction: Surgical and Patient-Reported Outcomes of Two-Stages vs Single-Stage Implant-Based Breast Reconstruction

BackgroundTwo-stages pre-pectoral breast reconstruction may confer advantages over direct to implant (DTI) and subpectoral reconstruction in selected patients who have no indication for autologous reconstruction. The primary endpoint of the study was to evaluate and compare the incidence of capsular contracture in the pre-pectoral two-stages technique versus the direct to implant technique. Complications related to the two surgical techniques and patient satisfaction were also evaluated.MethodsA retrospective review of 45 two stages and 45 Direct-to-implant, DTI patients was completed. Acellular dermal matrix was used in all patients. An evaluation of anthropometric and clinical parameters, surgical procedures and complications was conducted. Minimum follow-up was 12 months after placement of the definitive implant.ResultsThere was no statistically significant difference in the rate of capsular contracture in the two groups. Rippling occurred more in DTI reconstruction. In the two-stages reconstruction, lipofilling was applied more often and there was a higher incidence of seroma. Patient satisfaction extrapolated from the Breast Q questionnaire was better for patients submitted to two-stage implant-based breast reconstruction.ConclusionDual-stage pre-pectoral reconstruction with acellular dermal matrix appears to be a good reconstructive solution in patients with relative contraindications for one-stage heterologous reconstruction with definitive prosthesis and no desire for autologous reconstruction.

Use of Antimicrobial Irrigation and Incidence of Capsular Contracture in Breast Augmentation and Immediate Implant-Based Breast Reconstruction.

Capsular contracture (CC) is one of the most common complications of implant-based breast reconstruction or augmentation surgery. Common risk factors of CC include biofilm, surgical site infections, history of prior CC or fibrosis, history of radiation therapy, and implant characteristics. Though bacterial contamination of breast protheses is associated with adverse sequelae, there are not universally accepted guidelines and limited best practice recommendations for antimicrobial breast pocket irrigation. Despite advanced molecular biology, the exact mechanism of this complication is not fully understood. Interventions that decrease the rate of CC include antibiotic prophylaxis or irrigation, acellular dermal matrix, leukotriene inhibitors, surgical techniques, and others. However, there is inconsistent evidence supporting these risk factors, and the current data was based on broad heterogeneous studies. The objective of this review was to provide a summary of the current data of contributing risk factors as well as preventative and treatment measures for CC.Level of Evidence III This journal requires that authors assign a level of evidence to each article. For a full description of these evidence-based medicine ratings, please refer to the Table of Contents or the online Instructions to Authors http://www.springer.com/00266.

Impact of hypofractionated adjuvant radiotherapy on complication rate in breast cancer patients with implant-based immediate reconstruction

Hypofractionated radiotherapy in the treatment of breast cancer patients has a signifiant advantage over conventional fractionation due to the shorter duration of treatment course while maintaining its antitumor effiacy. Usage of hypofractionated regimens may be restricted in patients with immediate breast reconstruction because of higher rate of complications. The aim of this study is to evaluate the incidence of complications in the reconstructed breast after hypofractionated radiotherapy. The study involved 100 patients with breast cancer after immediate implant-based breast reconstruction who underwent an adjuvant course of external beam radiation therapy with a single dose of 2.67 Gy to a total dose of 40.05 Gy. In our study the incidence of capsular contracture is 8 %, infectious complications – 2.3 %, protrusion – 4.6 %. The total incidence of complications is 15 %, which does not exceed the incidence in conventional fractionation.

Literature Review on the Different Types of Breast Implants: Advantages and Disadvantages

Breast implants are devices used in cosmetic and reconstructive surgery to increase the volume and improve the shape of the breasts. In this study, the different types of breast implants available in clinical practice were investigated. Four main types were identified: saline implants, silicone gel implants, highly cohesive silicone gel implants, and double lumen implants. Saline implants consist of a silicone shell filled with sterile saline. They have advantages such as the ability to adjust volume during surgery, easy rupture detection and lower cost. However, they may have a less natural feel and a higher risk of wrinkling and rippling. Silicone gel implants are widely used because of their more natural look and feel. Silicone gel is cohesive and offers a consistency similar to breast tissue. They have a lower incidence of wrinkling and rippling, greater durability and less sensitivity to cold. However, detection of ruptures can be more difficult and there is a potential risk of capsular contracture. Highly cohesive silicone gel implants, also known as anatomical implants, are designed to mimic the natural shape and projection of the breast. They have predictable aesthetic results, a lower incidence of capsular contracture and greater resistance to displacement. However, they may require longer incisions and have a higher cost. Double lumen implants have two separate shell layers, one internal with cohesive silicone gel and the other external with saline solution. They offer an additional layer of security in case of rupture of the inner shell and allow volume adjustment during surgery. However, they may have a less natural feel and greater technical complexity.

D88. A Friend or Foe? Evaluating Mesh Usage, Implant Location, and the Timeline of Capsular Contracture Development

PURPOSE: Acellular dermal matrix (ADM) and synthetic meshes are commonly used to improve inframammary-fold definition, minimize muscle excision, and allow for greater control over surgical techniques in implant-based reconstruction. The aim of this study is to compare no mesh usage to the use of biological matrices (ADM) or synthetic mesh (P4HB) in conjunction with various placement locations (pre-pectoral, retro-pectoral, total sub-muscular), and further examine the respective incidences and timelines of capsular contracture development within each subgroup. METHODS: A dataset consisting of 209 patients (406 samples) who had undergone two-stage reconstruction between 2012-2021 was used in the study. Univariate logistic regression was used for statistical analysis. Kaplan-Meier estimator was used to plot the survival curve for the various conditions. RESULTS: On univariate logistic regression (OR 1.95, p-value 0.004) and survival analysis (p-value 0.0082), P4HB mesh usage was linked to an increased risk of capsular contracture development. Out of the various placement modalities, retro-pectoral with P4HB yielded the highest contracture rate. Pre-pectoral placement with no mesh and retro-pectoral placement with ADM showed similar timelines of capsular contracture development. The lowest incidence of capsular contracture occurred in the pre-pectoral placement and no mesh subgroup (49/161, 30.4%). CONCLUSION: The use of P4HB mesh in two-stage breast reconstruction is correlated with a statistically significant increase in capsular contracture. Pre-pectoral tissue expander and no mesh led to the lowest rate. There did not appear to be a significant difference in the timeline of contracture formation between retro-pectoral with ADM and pre-pectoral with no mesh usage.

Breast Implant Capsule: A Murine Model Comparing Capsular Contracture Susceptibility Among Six Breast Implants Available in the Market.

Breast implant capsule development and behavior are mainly determined by implant surface combined with other external factors such as intraoperative contamination, radiation or concomitant pharmacologic treatment. Thus, there are several diseases: capsular contracture, breast implant illness or Breast Implant-Associated Anaplastic Large Cell Lymphoma (BIA-ALCL), that have been correlated with the specific type of implant placed. This is the first study to compare all major implant and texture models available in the market on the development and behave of the capsules. Through a histopathological analysis, we compared the behavior of different implant surfaces and how different cellular and histological properties give rise to different susceptibilities to develop capsular contracture among these devices. A total of 48 Wistar female rats were used to implant 6 different types of breast implants. Mentor®, McGhan®, Polytech polyurethane®, Xtralane®, Motiva® and Natrelle Smooth® implants were employed; 20 rats received Motiva®, Xtralane® and Polytech polyurethane®, and 28 rats received Mentor®, McGhan® and Natrelle Smooth® implants. The capsules were removed five weeks after the implants placement. Further histological analysis compared capsule composition, collagen density and cellularity. High texturization implants showed the highest levels of collagen and cellularity along the capsule. However, polyurethane implants capsules behaved differently regarding capsule composition, with the thickest capsules but fewer collagen and myofibroblasts than expected, despite being generally considered as a macrotexturized implant. Nanotextured implants and microtextured implants histological findings showed similar characteristics and less susceptibility to develop a capsular contracture compared with smooth implants. This study shows the relevance of the breast implant surface on the definitive capsules' development, since this is one of the most differentiated factors that determine the incidence of capsular contracture and probably other diseases like BIA-ALCL. A correlation of these findings with clinical cases will help to unify implant classification criteria based on their shell and their estimated incidence of capsule-associated pathologies. Up to this point, the establishment of additional groups is recommended as nanotexturized implants seem to behave differently to pure smooth surfaces and polyurethane implants present diverse features from macro- or microtextured implants. This journal requires that authors assign a level of evidence to each submission to which Evidence-Based Medicine rankings are applicable. This excludes Review Articles, Book Reviews, and manuscripts that concern Basic Science, Animal Studies, Cadaver Studies, and Experimental Studies. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266 .

Keller Funnel Efficacy in "No Touch" Breast Augmentation and Reconstruction: A Systematic Review.

A systematic review of PubMed, Embase, the Cochrane database, and Google Scholar was performed between 2005 and 2021. All clinical-based, retrospective and prospective studies utilizing the Keller funnel method for breast implant insertion were selected. Six studies were identified for evaluation: five were retrospective cohorts and one was a prospective trial. No randomized controlled trials were found. Outcomes reported included lower rates of capsular contracture (RR, 0.42; P = 0.0006; 95% CI, 0.25-0.69), shorter incision lengths (35.5 ± 2.1 mm), less insertion time (mean = 6 seconds), and decreased complications, and one paper reported ultimately greater patient satisfaction with outcomes (BREAST-Q Score: 92%). This review suggests that the Keller funnel is a useful method for no-touch breast augmentation and reconstruction surgery. The Keller funnel reduces subsequent capsular contracture rate, surgical time, and incision length and allows for easier insertion. However, our findings support recommendation of a prospective randomized controlled clinical trial with larger population size and follow-up intervals.

Enhancing Patient Outcomes in Aesthetic Breast Implant Procedures Using Proven Antimicrobial Breast Pocket Irrigations: A 20-Year Follow-up.

Capsular contracture (CC) remains the most common complication of implant-based aesthetic and reconstructive breast surgery. With subclinical infection proven to be the primary etiology, antimicrobial breast pocket irrigation has been recommended as the key step to reduce CC but has not been universally adopted. The purpose of this study was to review the rates of CC observed when applying proven antimicrobial breast pocket irrigations. Data from patients undergoing cosmetic breast augmentation were recorded prospectively from 1997 to 2017. The irrigation was performed with either a Betadine-containing (50% Betadine or "Betadine triple") or a non-Betadine triple antibiotic regimen. The database was assessed to determine the type of implant used, the incidence of CC, and possible contributing factors. The degree of CC was recorded according to the Baker classification. A 20-year prospective data collection yielded 2088 patients with 4176 implants; of these patients, 826 had textured implants and 1262 had smooth implants. The incidence of Grade III/IV CC was found to be 0.57% in all patients undergoing primary breast augmentation (1.21% in textured implants and 0.16% in smooth implants). This study constitutes the largest and longest review of CC in a controlled, single-surgeon setting. The incidence of CC is low and reinforces the efficacy/utility of antimicrobial breast pocket irrigation. Both the Betadine and non-Betadine antibiotic regimens were found to be effective, with the Betadine regimen being preferred. Universal adoption of Betadine-containing antimicrobial breast pocket irrigation is recommended to reduce CC and other device-associated infections.

Correlation between Capsular Contracture Rates and Access Incision Location in Vertical Augmentation Mastopexy.

Background:Plastic surgeons commonly use one of three access incisions to place breast implants during vertical augmentation mastopexy, including inframammary, vertical, and periareolar. It is not known whether there is a correlation between capsular contracture and access incision location. The purpose of this study was to investigate in a single-surgeon series the incidence of capsular contracture associated with access incision locations in silicone vertical augmentation mastopexy.Methods:Patients undergoing a vertical augmentation mastopexy between 2013 and 2017 were studied retrospectively. All patients underwent a standardized, dual-plane breast augmentation with smooth surface silicone gel implants. Patients were evaluated 1 year postoperatively by the Baker scale.Results:A total of 322 patients met study criteria. Eighty-four had periareolar access, 86 had vertical access, and 152 had inframammary access. There were no differences in patient age or mean implant size between the groups. The capsular contracture rate of the periareolar group was 5.36 percent; in the vertical access group, 3.48 percent; and in the inframammary access group, 1.64 percent. Capsular contracture rates correlated inversely to the distance to the nipple-areola complex, with the periareolar access rates the highest, the vertical access rates intermediate, and the inframammary access rates the lowest. Inframammary incisions were associated with lower capsular contracture rates than periareolar incisions when performed in conjunction with vertical augmentation mastopexy (p = 0.043). Vertical access capsular contracture rates were intermediate between periareolar and inframammary groups.Conclusion:Surgeons should take into consideration the capsular contracture rates associated with access incision location when planning or performing vertical augmentation mastopexy.CLINICAL QUESTION/LEVEL OF EVIDENCE:Therapeutic, III.