Elevating Residency Match Success: The Potential Impact of a Home Program on the Surgical Match Rate.

INTRODUCTION: Home residency programs can provide medical students with opportunities for networking, mentorship, research, and exposure to surgeries. The goal of this project was to understand the potential impact of home surgical residencies on student match rates into specific surgical specialties. METHODS: This 5-year retrospective study (2019-2023) analyzed 12,916 matched applicants from 155 United States MD programs through publicly available match lists. Odds ratios (ORs) were used to determine the likelihood of students from institutions with home surgical residency programs (home programs) matching into desired surgical specialties compared to students from institutions without home programs. Additional variables included the Alpha Omega Alpha and the Gold Humanism Honor Society statuses of the medical school, the number of faculty, and the type of residency program. RESULTS: Of the matched applicants, 11,442 had home programs resulting in a 39.1% match rate into surgical specialties compared to a 22.3% match rate for students without a home program (OR: 1.76) (P < 0.001). Of the applicants with a home program compared to those without a home program, 69.2% matched into an academic residency (OR: 1.06), 7.7% matched into a community residency (OR: 0.90), 13.6% matched into a combined residency (OR: 0.95), and 2.5% matched into a military residency (OR: 1.31). CONCLUSIONS: Medical students graduating from institutions with home programs were 1.76 times more likely to match into a surgical residency program compared to those graduating from institutions without a home program. Future studies should look at how access to certain resources may influence a student's match rate.

The Effectiveness of Patient Education on Laparoscopic Surgery Postoperative Outcomes to Determine Whether Direct Coaching Is the Best Approach: Systematic Review of Randomized Controlled Trials.

BACKGROUND: As of 2022, patient adherence to postoperative guidelines can reduce the risk of complications by up to 52.4% following laparoscopic abdominal surgery. With the availability of various preoperative education interventions (POEIs), understanding which POEI results in improvement in patient outcomes across the procedures is imperative. OBJECTIVE: This study aims to determine which POEI could be the most effective on patient outcomes by systematically reviewing all the POEIs reported in the literature. METHODS: In total, 4753 articles investigating various POEIs (eg, videos, presentations, mobile apps, and one-on-one education or coaching) were collected from the PubMed, Embase, and Scopus databases. Inclusion criteria were adult patients undergoing abdominal laparoscopic surgery, randomized controlled trials, and studies that provided postoperative outcomes. Exclusion criteria included studies not published in English and with no outcomes reported. Title and abstract and full-text articles with POEI randomized controlled studies were screened based on the above criteria through a blinded, dual review using Covidence (Veritas Health Innovation). Study quality was assessed through the Cochrane Risk of Bias tool. The included articles were analyzed for educational content, intervention timing, intervention type, and postoperative outcomes appropriate for a particular surgery. RESULTS: Only 17 studies matched our criteria, with 1831 patients undergoing laparoscopic cholecystectomy, bariatric surgery (gastric bypass and gastric sleeve), and colectomy. In total, 15 studies reported a statistically significant improvement in at least 1 patient postoperative outcome. None of these studies were found to have an overall high risk of bias according to Cochrane standards. In total, 41% (7/17) of the included studies using direct individual education improved outcomes in almost all surgery types, while educational videos had the greatest statistically significant impact for anxiety, nausea, and pain postoperatively (P<.01). Direct group education demonstrated significant improvement in weight, BMI, exercise, and depressive symptoms in 33% (2/6) of the laparoscopic gastric bypass studies. CONCLUSIONS: Direct education (individual or group based) positively impacts postoperative laparoscopic surgery outcomes. TRIAL REGISTRATION: PROSPERO CRD42023438698; https://www.crd.york.ac.uk/prospero/display_record.php?RecordID=438698.

National trends in revision procedures in post-mastectomy breast reconstruction: Autologous vs implant-based approaches.

BACKGROUND: Breast reconstruction involves collaborative decision-making between patients and surgeons, but the need for multiple revisions after the initial reconstructive surgery process can burden patients and the healthcare system. This study explored how the type of breast reconstruction (autologous [ABR], immediate implant-based reconstruction [IBR], or two-stage IBR) impacts postreconstruction revision rates. METHOD: Using MarketScan Databases, a retrospective database study (2007-2021) was conducted, identifying revision procedures through Current Procedural Terminology codes. Statistical analysis with linear models, adjusted for patient characteristics and surgical factors, used a significance threshold of p < 0.05. RESULTS: Among 58,264 patients, 6.2% of ABR patients, 3.8% of immediate IBR patients, and 3.6% of two-stage IBR patients underwent future revisions. IBR had a 51% lower incidence rate of revision operations than ABR (incidence rate ratio = 0.49, p < 0.001). Within IBR, there was no significant difference in the number of operations between immediate IBR (0.06 ± 0.32) and two-stage IBR (0.05 ± 0.32, p = 0.95). Immediate IBR demonstrated 12% (OR = 0.88, p = 0.0022) and 70% (OR = 0.30, p < 0.001) lower odds of requiring breast revision and fat grafting compared to ABR, respectively. Two-stage reconstruction had 66 % lower odds of requiring only fat grafting than ABR (OR = 0.34, p < 0.001). CONCLUSION: ABR necessitated a higher number of total revision procedures after completion of the initial reconstruction. These findings will better equip providers and patients to counsel patients in understanding their reconstructive journey, planning their reconstructions and timing, and provide more accurate estimates of the number of procedures that will be required to reach their aesthetic goals and final outcome.

Codesign Use in Palliative Care Intervention Development: A Systematic Review.

CONTEXT: Codesign is a methodology that includes active collaboration between stakeholders in designing solutions and has been used in the development and implementation of palliative care (PC) interventions. OBJECTIVES: To synthesize the state of evidence for codesign in the development of PC interventions. METHODS: We searched PubMed, EMBASE, and CINAHL for peer-reviewed studies published after 1995 that reported evidence of codesigned interventions and outcomes in patients receiving palliative, hospice, or end-of-life care. We screened studies through independent and blinded dual review within Covidence and assessed study quality with the 2018 Mixed Methods Appraisal Tool. We narratively synthesized codesign duration, engagement approach, stakeholders involved, intervention designs, follow-ups, and outcomes, comparing among codesigns reporting meaningful improvement in outcomes. We created a best practice checklist which we used to evaluate codesign use in each study. RESULTS: About 1,036 abstracts and 54 full text articles were screened. Twenty-eight studies met inclusion criteria and were abstracted. Feedback collection modalities ranged from iterative drafting, pilot testing, advisory panels, workshops, focus groups, and interviews. Thirteen studies applied pretesting/prototyping through pretest post-test, focus groups, prototypes, alpha and beta testing, and mock-ups. Eleven studies reported improved outcomes, eight of which utilized iterative codesign. All the studies reporting improved outcomes mentioned meeting with stakeholders at least twice. Two studies met all criteria in our codesign best practice checklist. CONCLUSION: Codesigned PC interventions demonstrate high variance in the modality of acquiring feedback and application of codesign. Successful codesign leading to improvement in outcomes is achieved by involving patients, caregivers, and providers in iterating intervention design.

Postoperative Casting of Below-Knee Amputation Reduces StumpComplications.

BACKGROUND: Against the technological advances in limb salvage, below-the-knee amputation (BKA) remains a common procedure. Although most elective BKA is classified as clean operation, the reported stump complication rate is much higher than predicted. Postoperative casting (PC) may reduce the number of these complications. The aim of this study was to compare the efficacy of elastic bandage with knee immobilizer (EBKI) and PC in BKA stump complications. METHODS: Retrospective cohort comparison design identified patients who underwent BKA between 2000 and 2023 for non-correctable critical limb ischemia (CLI), or excessive tissue loss secondary to CLI, infection, severe neuropathy, or the combination of these and stratified them into 2 cohorts based on their postoperative stump dressing: EBKI and PC. BKAs that were done for trauma or neoplastic processes were excluded. The primary outcome measures: wound healing in 6 weeks and length of stay (LOS). SECONDARY OUTCOME MEASURES: stump injury, infection, dehiscence, necrosis, number of higher-level amputations, knee contracture, and post-BKA mobility with Special Interest Group of Amputee Medicine score. RESULTS: One hundred sixteen patients with 122 limbs (52 EBKI and 70 PC) were found who met inclusion criteria and analyzed. The groups were comparable in demographics and comorbidities and preoperative variables, including mobility. The primary wound healing at 6 weeks was higher (P = 0.007); wound dehiscence (P = 0.01) and LOS (P = 0.006) was lower in the PC group compared to EBKI group. The PC group achieved higher Special Interest Group of Amputee Medicine mobility score and lower number of contractures developed compared to the EBKI group. CONCLUSIONS: Applying and maintaining PC to the BKA stump during the first month of healing reduced the incidence of stump complications, shortened the LOS, and improved postrehabilitation mobility results. We found no effect of PC on postoperative infections, stump necrosis, and higher-level amputations.

What Should I Use? Impact of Adhesion Barriers on Postoperative Abdominal Complications: A Systematic Review.

BACKGROUND: Adhesions are a feared complication of abdominal surgery. There have been many new adhesion barriers developed and tested; however, there is no recent systematic review analyzing all the published literature. To address this, we aimed to analyze the different types of adhesion barriers, and determine their effects on postoperative outcomes in patients. METHODS: A total of 14,038 articles utilizing adhesion barriers in abdominal surgery were retrieved from the PubMed, EMBASE, and Scopus databases. Inclusion criteria were: patients undergoing abdominal surgery, patients receiving an adhesion barrier, and reported postoperative outcomes. Two reviewers independently screened titles/abstracts and full-text articles using Covidence. The ROBINS-I tool was used to assess the quality of the included studies. Study protocol: Prospero CRD42023458230. RESULTS: A total of 20 studies, with no overall high risk of bias, with 171,792 patients were included. Most studies showed an equivocal benefit for adhesion barriers, with no singular adhesion barrier type that had definitive superior outcomes compared to the others. Bioresorbable barriers emerged as the most extensively researched adhesion barrier type, exhibiting promising results in colorectal surgery. Starch-based adhesion barriers also exhibited a reduction in overall postoperative bowel obstructions and may be beneficial for stoma sites and port closures. On the other hand, many studies raised concerns regarding complications, including risk of abscess formation, fistula development, peritonitis, and anastomotic leakage. CONCLUSIONS: Adhesion barriers should be considered on a case-by-case basis, however, they should not be utilized prophylactically in all abdominal surgeries due to their risk of complications.

Impact of post-operative infection on revision procedures in breast reconstruction: A marketscan database analysis.

BACKGROUND: Esthetic complications, such as capsular contracture and soft-tissue contour defects, hinder the desired outcomes of breast reconstruction. As subclinical infection is a prevailing theory behind capsular contracture, we investigated the effects of post-operative infections on these issues and revision procedures. METHODS: We conducted a retrospective database study (2007-2021) on breast reconstruction patients from the MarketScan® Databases. Esthetic complications were defined by their associated revision procedures and queried via CPT codes. Severe capsular contracture (Grade 3-4) was defined as requiring capsulotomy or capsulectomy with implant removal or replacement. Moderate and severe soft-tissue defects were determined by the need for fat grafting or breast revision, respectively. Generalized linear models were used, adjusting for comorbidities and surgical factors (p < 0.05). RESULTS: We analyzed the data on 62,510 eligible patients. Post-operative infections increased the odds of capsulotomy (OR 1.59, p < 0.001) and capsulectomy (OR 2.30, p < 0.001). They also raised the odds of breast revision for severe soft-tissue defects (OR 1.21, p < 0.001). There was no significant association between infections and fat grafting for moderate defects. Patients who had post-operative infections were also more likely to experience another infection after fat grafting (OR 3.39, p = 0.0018). In two-stage reconstruction, infection after tissue expander placement was associated with greater odds of infection after implant placement. CONCLUSION: Post-operative infections increase the likelihood of developing severe soft-tissue defects and capsular contracture requiring surgical revision. Our data reinforce the role of infections in the pathophysiology of capsular contracture. Additionally, infections elevate the risk of subsequent infections after fat grafting for moderate defects, further increasing patient morbidity.

Pure Wisdom or Potemkin Villages? A Comparison of ChatGPT 3.5 and ChatGPT 4 on USMLE Step 3 Style Questions: Quantitative Analysis.

BACKGROUND: The United States Medical Licensing Examination (USMLE) has been critical in medical education since 1992, testing various aspects of a medical student's knowledge and skills through different steps, based on their training level. Artificial intelligence (AI) tools, including chatbots like ChatGPT, are emerging technologies with potential applications in medicine. However, comprehensive studies analyzing ChatGPT's performance on USMLE Step 3 in large-scale scenarios and comparing different versions of ChatGPT are limited. OBJECTIVE: This paper aimed to analyze ChatGPT's performance on USMLE Step 3 practice test questions to better elucidate the strengths and weaknesses of AI use in medical education and deduce evidence-based strategies to counteract AI cheating. METHODS: A total of 2069 USMLE Step 3 practice questions were extracted from the AMBOSS study platform. After including 229 image-based questions, a total of 1840 text-based questions were further categorized and entered into ChatGPT 3.5, while a subset of 229 questions were entered into ChatGPT 4. Responses were recorded, and the accuracy of ChatGPT answers as well as its performance in different test question categories and for different difficulty levels were compared between both versions. RESULTS: Overall, ChatGPT 4 demonstrated a statistically significant superior performance compared to ChatGPT 3.5, achieving an accuracy of 84.7% (194/229) and 56.9% (1047/1840), respectively. A noteworthy correlation was observed between the length of test questions and the performance of ChatGPT 3.5 (ρ=-0.069; P=.003), which was absent in ChatGPT 4 (P=.87). Additionally, the difficulty of test questions, as categorized by AMBOSS hammer ratings, showed a statistically significant correlation with performance for both ChatGPT versions, with ρ=-0.289 for ChatGPT 3.5 and ρ=-0.344 for ChatGPT 4. ChatGPT 4 surpassed ChatGPT 3.5 in all levels of test question difficulty, except for the 2 highest difficulty tiers (4 and 5 hammers), where statistical significance was not reached. CONCLUSIONS: In this study, ChatGPT 4 demonstrated remarkable proficiency in taking the USMLE Step 3, with an accuracy rate of 84.7% (194/229), outshining ChatGPT 3.5 with an accuracy rate of 56.9% (1047/1840). Although ChatGPT 4 performed exceptionally, it encountered difficulties in questions requiring the application of theoretical concepts, particularly in cardiology and neurology. These insights are pivotal for the development of examination strategies that are resilient to AI and underline the promising role of AI in the realm of medical education and diagnostics.

Interdisciplinary interventions that improve patient-reported outcomes in perioperative cancer care: A systematic review of randomized control trials.

INTRODUCTION: Interdisciplinary teams are often leveraged to improve quality of cancer care in the perioperative period. We aimed to identify the team structures and processes in interdisciplinary interventions that improve perioperative patient-reported outcomes for patients with cancer. METHODS: We searched PubMed, EMBASE, and CINAHL for randomized control trials published at any time and screened 7,195 articles. To be included in our review, studies needed to report patient-reported outcomes, have interventions that occur in the perioperative period, include surgical cancer treatment, and include at least one non physician intervention clinical team member: advanced practice providers, including nurse practitioners and physician assistants, clinical nurse specialists, and registered nurses. We narratively synthesized intervention components, specifically roles assumed by intervention clinical team members and interdisciplinary team processes, to compare interventions that improved patient-reported outcomes, based on minimal clinically important difference and statistical significance. RESULTS: We included 34 studies with a total of 4,722 participants, of which 31 reported a clinically meaningful improvement in at least one patient-reported outcome. No included studies had an overall high risk of bias. The common clinical team member roles featured patient education regarding diagnosis, treatment, coping, and pain/symptom management as well as postoperative follow up regarding problems after surgery, resource dissemination, and care planning. Other intervention components included six or more months of continuous clinical team member contact with the patient and involvement of the patient's caregiver. CONCLUSIONS: Future interventions might prioritize supporting clinical team members roles to include patient education, caregiver engagement, and clinical follow-up.

Timing of autologous fat grafting in implant-based breast reconstruction: Best practices based on systematic review and meta-analysis.

BACKGROUND: Fat grafting is commonly undertaken as a third-stage procedure in patients with staged implant-based breast reconstruction (IBR). However, fat grafting performed during second-stage expander/implant exchange provides faster results without an additional procedure and associated risks (Patel et al., 2020). We previously demonstrated that fat grafting during second-stage expander/implant exchange did not increase clinical complications (Patel et al., 2020). As a corollary, this study investigates patients' satisfaction with second- versus third-stage fat grafting to help establish a set of best practices for the timing of fat grafting in such patients. METHODS: A review of PubMed/MEDLINE databases (2010-2022) was performed to identify articles investigating the quality of life in patients undergoing second- or third-stage fat grafting after IBR. BREAST-Q scores were pooled using random-effects modeling and the DerSimonian-Laird method. Post-hoc sensitivity analyses were completed using the Hartung-Knapp-Sidik-Jonkman method. The Haldane-Anscombe correction was used for outcomes with low counts. All study analyses adhered to Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines. RESULTS: Six studies (216 patients) were included. Pooled random-effects modeling demonstrated no significant changes in BREAST-Q satisfaction with outcome scores when comparing patients who received second- versus third-stage fat grafting (p = 0.178) with results robust to sensitivity analyses. In addition, pooled analyses of the available data demonstrated that second-stage fat grafting did not increase downstream revision surgery needs compared to third-stage fat grafting. CONCLUSIONS: In combination with our prior work, this meta-analysis suggests that second-stage fat grafting provides not only equivalent but improved clinical and quality of life outcomes with fewer procedures in patients undergoing expander/IBR.

From bench to bedside - current clinical and translational challenges in fibula free flap reconstruction.

Fibula free flaps (FFF) represent a working horse for different reconstructive scenarios in facial surgery. While FFF were initially established for mandible reconstruction, advancements in planning for microsurgical techniques have paved the way toward a broader spectrum of indications, including maxillary defects. Essential factors to improve patient outcomes following FFF include minimal donor site morbidity, adequate bone length, and dual blood supply. Yet, persisting clinical and translational challenges hamper the effectiveness of FFF. In the preoperative phase, virtual surgical planning and artificial intelligence tools carry untapped potential, while the intraoperative role of individualized surgical templates and bioprinted prostheses remains to be summarized. Further, the integration of novel flap monitoring technologies into postoperative patient management has been subject to translational and clinical research efforts. Overall, there is a paucity of studies condensing the body of knowledge on emerging technologies and techniques in FFF surgery. Herein, we aim to review current challenges and solution possibilities in FFF. This line of research may serve as a pocket guide on cutting-edge developments and facilitate future targeted research in FFF.

Initial impacts of the COVID-19 pandemic on tobacco use among college students in California.

Objective: To evaluate the change in tobacco use by college students in California during the COVID-19 pandemic. Participants: Young adults (18-24 years) currently enrolled in a California college or university (N = 212). Methods: Students recruited through social media posts and by student tobacco advocate members completed an online survey of 59 questions in Spring 2021. Results: Almost 80% of current tobacco users reported a change in tobacco use during the pandemic. Most current tobacco users who changed their tobacco use reported an increase in use during the pandemic (43.2%) and 38.7% reported a decrease in use. Conclusion: As a result of COVID-19, many college students changed their tobacco use. As students return to campus and COVID-19 regulations are lifted, this may be an ideal time for prevention and cessation messages, which could include information on health risks associated with tobacco and e-cigarette use, and healthy methods for stress reduction.

The Geographical Impact of Plastic Surgery Residency to Fellowship and Residency/Fellowship to First Job Placement.

INTRODUCTION: The location of trainees' plastic surgery residency or fellowship has implications on their subsequent careers, which can inform future trainees and faculty decisions, and may affect access to care nationwide. This study explores historic geographic trends of the location where trainees complete residency or fellowship and where they pursue a fellowship program or first job. METHODS: Graduates from US integrated plastic surgery residency or fellowship programs from 2015 to 2021 were identified along with their proximity to fellowship or first job. Location was categorized based on whether the graduate's fellowship/first job location to residency/fellowship was within 100 miles, the same state, the same geographic region, the United States, or international. A χ2 value was calculated to determine the significance of relative geographical location after training. RESULTS: Three hundred sixty-five graduates that attended fellowship were included, representing 76.5% (65/85) of integrated plastic surgery residency programs. There were 47.7% (n = 174) that stayed within the same geographic region and 3.6% (n = 13) pursued training internationally. The location of the residency or fellowship program appears to have an influence on the location of the graduate's fellowship or first job. CONCLUSION: Graduates who completed integrated residency or fellowship in a certain geographic location were more likely to stay in that area for their fellowship or first job. This may be explained by graduates continuing training with their original program, the established network, and personal factors such as family and friends.

Serious illness care quality during COVID-19: Identifying improvement opportunities in narrative reports from a National Bereaved Family Survey.

BACKGROUND: COVID-19 significantly impacted care delivery to seriously ill patients, especially around including family and caregivers in patient care. AIM: Based on routinely collected bereaved family reports, actionable practices were identified to maintain and improve care in the last month of life, with potential application to all seriously ill patients. DESIGN: The Veterans Health Administration's Bereaved Family Survey is used nationally to gather routine feedback from families and caregivers of recent in-patient decedents; the survey includes multiple structured items as well as space for open narrative responses. The responses were analyzed using qualitative content analysis with dual review. SETTING/PARTICIPANTS: Between February 2020 and March 2021, there were 5372 responses to the free response questions of which 1000 (18.6%) responses were randomly selected. The 445 (44.5%) responses from 377 unique individuals included actionable practices. RESULTS: Bereaved family members and caregivers identified four opportunities with a total of 32 actionable practices. Opportunity 1: Facilitate the use of video communication, included four actionable practices. Opportunity 2: Provide timely and accurate responses to family concerns, included 17 actionable practices. Opportunity 3: Accommodate family/caregiver visitation, included eight actionable practices. Opportunity 4: Offer physical presence to the patient when family/caregivers are unable to visit, included three actionable practices. CONCLUSION: The findings from this quality improvement project are applicable during a pandemic, but also translate to improving the care of seriously ill patients in other circumstances, such as when family members or caregivers are geographically distant from a loved one during the last weeks of life.

Is Plastic Surgery Training Equitable? An Analysis of Health Equity across US Plastic Surgery Residency Programs.

Achieving health equity includes training surgeons in environments exemplifying access, treatment, and outcomes across the racial, ethnic, and socioeconomic spectrum. Increased attention on health equity has generated metrics comparing hospitals. To establish the quality of health equity in plastic and reconstructive surgery (PRS) residency training, we determined the mean equity score (MES) across training hospitals of US PRS residencies. Methods: The 2021 Lown Institute Hospital Index database was merged with affiliated training hospitals of US integrated PRS residency programs. The Lown equity category is composed of three domains (community benefit, inclusivity, pay equity) generating a health equity grade. MES (standard deviation) was calculated and reported for residency programs (higher MES represented greater health equity). Linear regression modeled the effects of a program's number of training hospitals, safety net hospitals, and geographical region on MES. Results: The MES was 2.64 (0.62). An estimated 5.9% of programs had an MES between 1-2. In total, 56.5% of programs had an MES between 2 and 3, and 37.7% had an MES of 3 or more. The southern region was associated with a higher MES compared with the reference group (Northeast) (P = 0.03). The number of safety net hospitals per program was associated with higher MES (P = 0.02). Conclusions: Two out of three programs train residents in facilities failing to demonstrate high equity healthcare. Programs should promote health equity by diversifying care delivery through affiliated hospitals. This will aid in the creation of a PRS workforce trained to provide care for a socioeconomically, racially, and ethnically diverse population.

The Best Under Stress: An Analysis of Breast Tissue Expander Response to External Forces.

Background: The use of breast tissue expanders (TEs) in breast reconstruction is accompanied by undesired changes to the chest wall and lateral plane. Breast TEs are designed to create a naturally formed breast pocket by capitalizing on the ductile response of skin tissue; however, in practice, the use of expanders is accompanied by undesired changes to the chest wall and lateral plane. Objectives: The authors of this study compared 3 comparably sized and commercially available breast TEs to assess the mechanical profile and functionality of each design. Methods: Authors compared MENTOR Artoura PLUS Smooth (Irvine, CA), Allergan 133 Smooth (Irvine, CA), and Sientra AlloX2 Smooth (Santa Barbara, CA) filled to 100% of their label volume. The mechanical profile of TEs was assessed via vertical compression. Dimensions were recorded at baseline and percent changes were calculated at each compressive load (5-35 lbf intervals of 5 lbf). Results: Base width and projection were recorded at compressive loads of 10, 20, and 35 lbs. For percent changes of base width, MENTOR had 0.98%, 2.09%, 3.84%; Allergan 4.21%, 9.15%, 15.52%; and Sientra 4.72%, 10.19%, 19.15%. For percent changes of projection, MENTOR had -19.06%, -25.44%, -30.88%, Allergan -35.53%, -42.90%, -50.09%, and Sientra -29.64%, -37.68%, -44.69%. For percent change of height, MENTOR had 1.44%, 2.62%, 4.27%, Allergan 10.26%, 16.49%, 22.97%, and Sientra 6.99%, 11.93%, 16.90%. MENTOR's TE had the most pronounced lower pole with volume expansion. Conclusions: The MENTOR TE demonstrated the least lateral deformation and projection loss across the range of compressive loads, as well as the highest force resistance compared with the other models.