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BACKGROUND: Perforator dissection and flap elevation are routinely performed for microsurgical reconstruction; however, there is a steep learning curve to mastering these technical skills. Though live porcine models have been utilized as a microsurgical training model, there are significant drawbacks that limit their use, including cost, limited ability for repetition, and obstacles associated with animal care. Here we describe the creation of a novel perforator dissection model using latex augmented non-living porcine abdominal walls. We provide anatomic measurements that demonstrate valuable similarities and differences to human anatomy to maximize microsurgical trainee practice. METHODS: Six latex-infused porcine abdomens were dissected based on the deep cranial epigastric artery (DCEA). Dissection was centered over the abdominal wall mid-segment between the second and fourth nipple line. Dissection steps included exposure of lateral and medial row perforators, incision of anterior rectus sheath with perforator dissection, and dissection of DCEA pedicle. DCEA pedicle and perforator measurements were compared with deep inferior epigastric artery (DIEA) data in the literature. RESULTS: An average of seven perforators were consistently identified within each flap. Assembly of the model was performed quickly and allowed for two training sessions per specimen. Porcine abdominal walls demonstrate similar DCEA pedicle (2.6 ± 0.21 mm) and perforator (1.0 ± 0.18 mm) size compared with a human's DIEA (2.7 ± 0.27 mm, 1.1 ± 0.85 mm). CONCLUSION: The latex-infused porcine abdominal model is a novel, realistic simulation for perforator dissection practice for microsurgical trainees. Impact on resident comfort and confidence within a microsurgical training course is forthcoming.
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Parede Abdominal , Microcirurgia , Retalho Perfurante , Animais , Humanos , Parede Abdominal/cirurgia , Parede Abdominal/irrigação sanguínea , Artérias Epigástricas/cirurgia , Artérias Epigástricas/anatomia & histologia , Látex , Microcirurgia/educação , Retalho Perfurante/irrigação sanguínea , SuínosRESUMO
BACKGROUND: Perforator dissection and flap elevation are routinely performed for microsurgical reconstruction; however, there is a steep learning curve to mastering these technical skills. Though live porcine models have been utilized as microsurgical training models, significant drawbacks limit their use. We recently developed a latex-perfused, nonliving, porcine abdomen perforator dissection simulation and described its anatomic similarity to the human deep inferior epigastric artery flap. The purpose was to assess the change in resident confidence in performing key operative steps of flap elevation and perforator dissection and obtain feedback on model realism and utility. METHODS: Seventeen plastic and reconstructive surgery resident physicians (postgraduate years 1-6) at a single institution participated in a perforator dissection session utilizing the simulation model. Each resident completed pre- and postactivity surveys to assess interval change in confidence in operating. The postactivity survey also asked residents to answer questions regarding their perception of the model's anatomic and surgical realism and utility in microsurgical training. RESULTS: Following a practice session using the latex-perfused, nonliving porcine abdomen, resident confidence was significantly increased in performing all key operative steps and the procedure overall (p = 0.001). All residents (n = 17, 100%) believed the model would improve "trainees' ability to perform perforator dissection in the operating room." Perforator, fascial, and pedicle anatomy were reported to be "Very" similar to human anatomy, with a median Likert score (MLS) of 4. Additionally, six out of the eight surgical steps were noted to be "Very" realistic, with only "Flap Design" and "Fascial Closure" found to be "Moderately" realistic with an MLS of 3. CONCLUSION: The latex-infused porcine abdominal model is a novel, realistic simulation for microsurgical trainee perforator dissection practice. This model offers a suitable substitute for perforator dissection practice, as its implementation within a microsurgery training course improves resident comfort and confidence.
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Competência Clínica , Internato e Residência , Microcirurgia , Retalho Perfurante , Treinamento por Simulação , Animais , Microcirurgia/educação , Suínos , Retalho Perfurante/irrigação sanguínea , Treinamento por Simulação/métodos , Humanos , Procedimentos de Cirurgia Plástica/educação , Dissecação/educação , Modelos Animais , Abdome/cirurgia , Educação de Pós-Graduação em Medicina/métodosRESUMO
BACKGROUND: The integrated plastic surgery residency match continues to be highly competitive. Every year, some candidates are former NCAA athletes. While it is challenging to balance academic and athletic responsibilities, participation in NCAA sports may be predictive of continued success. OBJECTIVES: This study aimed to evaluate the impact of participation in collegiate athletics on applicant anticipated rank and academic success. METHODS: All applications received from 2017 to 2020 at a single institution were reviewed for participation in NCAA athletics (Division I-III). Our primary outcome of interest was applicant anticipated rank by letter of reference writers. Applications were also examined for demographic information, membership in AOA, number of research publications, and USMLE board certification examination scores. RESULTS: After reviewing 885 applications, 61 applicants (6.89%) were former NCAA athletes. Former NCAA involvement was associated with the highest effect on anticipated ranking (- 0.22, p=0.001). Former NCAA involvement demonstrated the highest odds of receiving an anticipated ranking in the top 5 (OR 1.83, p=0.025). We found no significant difference in research productivity between the two groups, including first authorships or USMLE Step 1 board certification exam scores. A significant difference was seen in race distribution, with forty-five (80.4%) of athlete applicants identifying as Caucasian, while 430 (56.5%) of non-athletes identified as Caucasian (p=0.012). CONCLUSION: Former athletes applying to become integrated plastic surgery residents overcome the challenges of balancing athletic and academic pursuits with a higher anticipated rank in the integrated plastic surgery match while having comparable academic achievement. Former collegiate athletes have demonstrated greater success in and after residency. Former NCAA participation demonstrated the highest odds of receiving a top-5 rank. Former NCAA applicants showed no difference in academic productivity LEVEL OF EVIDENCE V: Case series study. 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 www.springer.com/00266 .
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BACKGROUND: The value of a fully trained microsurgeon dedicated to a laboratory setting at an academic institution is largely unknown. Microsurgery training lacks a national standard despite its highly complicated nature. Our study aims to evaluate the impact of a single laboratory-dedicated microsurgeon on the microsurgical training of integrated plastic surgery residents and collaborative efforts in research. METHOD: We devised a three-faceted microsurgical training curriculum, including a collaborative multi-institutional microsurgery course, novel high-fidelity simulator models, and a dedicated microsurgeon. We cataloged grant funding achieved through support to other divisions' protocols. Time, in hours, spent on training and the number of anastomoses completed with the microsurgical educator in a laboratory setting over a 4-year period (2017-2021) were evaluated. Resident independence scores were collected from attending microsurgeons to quantify the translation of microsurgical training. RESULTS: Purchasing and maintenance costs of rats in our rodent facility decreased by $16,533.60 as 198 rats were replaced by our models. The residents who participated in our novel microsurgical training program were able to independently perform anastomoses in the OR by their postgraduate year 6. Additionally, the surgical support offered by our laboratory-dedicated microsurgeon led to a total of $24,171,921 in grant funding between 2017 and 2020. CONCLUSION: Hiring an expert microsurgical educator to train residents in a laboratory has proved promising in accelerating microsurgical mastery. Novel training modules, alternatives to animal models, save resources in housing and animal costs. The addition of a research-oriented-microsurgeon has improved collaborative efforts to advance a range of surgical fields.
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Internato e Residência , Ratos , Animais , Competência Clínica , Currículo , Microcirurgia/métodos , Custos e Análise de CustoRESUMO
IMPORTANCE: After the rise of predatory journals characterized by false claims of legitimacy and a pay-to-publish model, similar "predatory conferences" have become increasingly common. The email inbox of an academic physician can be filled with daily announcements encouraging conference attendance, abstract submission, and often panel or keynote speaker invitations. It therefore becomes important for the plastic surgeon to be able to discern whether these invitations are from "predatory" conferences or legitimate career advancement opportunities, especially early in practice. OBJECTIVE: To aid the invited physician in determining the legitimacy of a conference, we aimed to characterize objective features of conferences for which email invitations have been received and use this information to build a decision-making guide. DESIGN: We analyzed all conference invitations received by the email of one academic plastic surgeon in a 4-month period. These conferences were organized into 3 groups based on affiliation with known professional societies. The following information was collected if available: affiliation with a professional society, type of invitation, conference location, conference format (in-person, virtual, or hybrid), conference title, conference fees, conference organizer, associated journals or publishers, abstract journal submission, grammar, headshots, time to abstract review, and acceptance. RESULTS: There were 56 unique conference invitations. These were categorized into 15 affiliated conferences, 28 unaffiliated conferences, and 17 conferences of undetermined affiliation. Unaffiliated conferences were more likely to solicit speaker invitations ( P < 0.001), claim to be "international" ( P = 0.001), send emails with grammatical errors ( P < 0.001), use unprofessional headshots on the conference Web site ( P < 0.001), and have reduced virtual conference fees ( P = 0.0032) as compared with conferences affiliated with known professional societies. When comparing the attendance and presenter fees of in-person venues, there was no significant difference between affiliated and unaffiliated conferences ( P = 0.973, P = 0.604). Affiliated conferences were more likely to take place in the United States ( P = 0.014). CONCLUSIONS AND RELEVANCE: We present a method to quickly assess the legitimacy of an academic meeting by way of a few important questions. Based on our findings, emails soliciting conference speakers, claims of international presence, grammatical errors, unprofessional headshots, and reduced virtual conference fees are all characteristics that should raise red flags.
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Editoração , Cirurgiões , Correio Eletrônico , Humanos , Estados UnidosRESUMO
BACKGROUND: Gender disparities are pervasive in academic plastic surgery. Previous research demonstrates articles authored by women receive fewer citations than those written by men, suggesting the presence of implicit gender bias. OBJECTIVES: The aim of this study was to describe current citation trends in plastic surgery literature and assess gender bias. The expectation was that women would be cited less frequently than their male peers. METHODS: Articles published between 2017 and 2019 were collected from 8 representative plastic surgery journals stratified by impact factor. Names of primary and senior authors of the 50 most cited articles per year per journal were collected and author gender was determined via online database and internet search. The median numbers of citations by primary and senior author gender were compared by Kruskal-Wallis test. RESULTS: Among 1167 articles, women wrote 27.3% as primary author and 18% as senior author. Women-authored articles were cited as often as those authored by men (Pâ >â 0.05) across all journal tiers. Articles with a female primary and male senior author had significantly more citations than articles with a male primary author (Pâ =â 0.038). CONCLUSIONS: No implicit gender bias was identified in citation trends, a finding unique to plastic surgery. Women primary authors are cited more often than male primary authors despite women comprising a small fraction of authorship overall. Additionally, variegated authorship pairings outperformed homogeneous ones. Therefore, increasing gender diversity within plastic surgery academia remains critical.
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Sexismo , Cirurgia Plástica , Feminino , Masculino , Humanos , Autoria , Publicações , Bases de Dados FactuaisRESUMO
PURPOSE: Plastic surgery procedures, including minimally invasive cosmetic procedures, continue to grow in popularity. Although dermatologic complications following plastic surgery procedures are rare, the authors have encountered several of these complications in their practice, including herpes simplex virus (HSV-1) and varicella zoster virus (VZV) infections, pyoderma gangrenosum (PG), contact dermatitis, and suture hypersensitivity. These cases prompted a systematic literature review of dermatologic complications following plastic surgery procedures. METHODS: The authors conducted a systematic review of PubMed, MEDLINE, EMBASE, Scopus, Web of Science, and the Cochrane Library to identify relevant articles published from 1975 to 2021. Articles were independently reviewed by the authors to determine whether studies met inclusion criteria. RESULTS: The majority of articles that met inclusion criteria represented level V evidence. The most robust evidence in the literature was for PG, for which there were 63 total studies. Pyoderma gangrenosum was most frequently reported following breast surgery (85.1%), while HSV-1 infections were frequently seen following minimally invasive procedures (84.6%). VZV reactivation was reported after a range of interventions, including pedicled flap surgeries and laser treatments. Other complications, such as suture hypersensitivity, were less frequently reported in the literature, usually as isolated case reports. CONCLUSIONS: Dermatologic complications represent a rare but serious concern following plastic surgery procedures. While most dermatologic complications resolve with appropriate treatment, sequelae of these conditions can be devastating to the patient's overall outcome. Plastic surgeons performing procedures at a high risk of these complications should recognize the diagnostic criteria to facilitate appropriate treatment. 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 www.springer.com/00266 .
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Procedimentos de Cirurgia Plástica , Cirurgia Plástica , Bibliometria , Humanos , Mastectomia , Procedimentos de Cirurgia Plástica/efeitos adversos , Retalhos CirúrgicosRESUMO
The challenges of cleft reconstruction have been present for centuries. However, understanding of the cleft nasal tip and the evolution of techniques decidedly began in the 20th century and refinement continues into the present day. Although a multitude of technical descriptions and case series have been published, a compendium of seminal techniques, which have shaped modern thought, has not been compiled in the literature. In this review, we discuss the anatomical disturbances in the cleft nasal tip anomaly, the timing and strategy of tip correction, and the major classic techniques for management of the cleft nasal tip. In addition, we have categorized the classic techniques into concepts that they embody.
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Fenda Labial/cirurgia , Nariz/anormalidades , Nariz/cirurgia , Rinoplastia/métodos , HumanosRESUMO
OBJECTIVE: Pyoderma gangrenosum is a rare, neutrophil-mediated, auto-inflammatory dermatosis. This condition has clinical features analogous to infectious processes and must be quickly diagnosed to be properly treated. The purpose of this study was to characterise relevant clinical features associated with pyoderma gangrenosum based on a large inpatient cohort. METHOD: The National Inpatient Sample (US) was used to identify patients with the diagnosis of pyoderma gangrenosum using ICD-9 diagnosis code 686.01, during the years 2008-2010. Data was collected on demographics, associated diagnoses, treatments and outcomes. Data analysis was performed using SAS 9.3 software. RESULTS: A total of 2,273 adult patients were identified with pyoderma gangrenosum. Mean age was 56 years; 66.4% were female; 71.1% were Caucasian. Pyoderma gangrenosum was the primary diagnosis in 22.6% of patients, followed by cellulitis (9.4%), inflammatory bowel disease (IBD) (6.9%), wound/ulcer (5.4%), sepsis (4.7%), and postoperative infection/complication (2.7%). The most common procedures performed were wound debridement (5.3%), skin biopsy (5.1%), esophagogastroduodenoscopy (2%), large bowel biopsy (1.9%), and incision and drainage (1.1%). A total of 74 patients (3.2%) died during hospitalisation. CONCLUSION: Pyoderma gangrenosum is a serious skin condition, frequently associated with systemic disease, and often confused with other skin pathergies. Pyoderma gangrenosum should be considered when evaluating patients with ulcers, wounds, and post-operative complications. A high index of suspicion is necessary for early and accurate diagnosis and prompt treatment.
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Pioderma Gangrenoso/epidemiologia , Adolescente , Adulto , Fatores Etários , Idoso , Idoso de 80 Anos ou mais , Criança , Estudos de Coortes , Demografia , Feminino , Humanos , Pacientes Internados/estatística & dados numéricos , Masculino , Pessoa de Meia-Idade , Complicações Pós-Operatórias , Pioderma Gangrenoso/enfermagem , Pioderma Gangrenoso/patologia , Pioderma Gangrenoso/prevenção & controle , Fatores Sexuais , Estados Unidos/epidemiologia , Adulto JovemRESUMO
BACKGROUND: Data exists to demonstrate that migraine surgery is cost-effective for the long-term treatment of headaches, but no data exists regarding its financial viability for healthcare institutions. The goals of the current study are to demonstrate that (1) migraine surgery is financially viable for an academic institution with a net-positive profitability and (2) migraine surgery is a sought-after therapy that can draw patients into the healthcare system. METHODS: A retrospective chart review of migraine and bilateral breast reduction (BBR) consults seen in clinic between 05/01/2011-05/30/2020 was conducted. Patient age, sex, payor information, and distance from the hospital was collected. Profit margin, percentage profit, collection percentage, and conversion rate to surgery from clinic was calculated. RESULTS: 407 new migraine consults and 119 new BBR consults were included from which, 150 underwent migraine surgeries and 117 underwent BBR respectively. Migraine surgery group came from a further distance for the initial consult (P-value<0.001) and for surgery (P-value<0.001). There were also more migraine surgery patients from out-of-state (P-value=0.012). Migraine clinic patients had a larger ratio of private insurers (P-value<0.001). Migraine surgery patients had a greater total charge (P-value<0.001), estimated reimbursement (P-value=0.001), and total cost (P-value<0.001). CONCLUSIONS: This study provides evidence that migraine surgery is financially viable for hospitals and while performing similarly to bilateral breast reduction in profit margin, it brought in more patients from outside the catchment area of our institution. These findings may encourage hospitals to recruit migraine surgeons to improve care for this underserved patient population.
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BACKGROUND: The hypothesis of this study was that trigeminal nerve stimulation (TNS) or peripheral nerve stimulation (PNS) could improve functional outcomes of peripheral nerve injury in a rat forelimb model when compared to control rats not receiving electrical stimulation (ES). While PNS is known to improve outcomes after nerve surgery, the role of TNS has not been explored. METHODS: Lewis rats were trained to perform a reach and grasp task before receiving a 2 mm gap repair of the ulnar and median nerves and randomized into four treatment groups: (1) sham injury, (2) nerve injury with sham ES, (3) nerve injury with PNS, and (4) nerve injury with TNS. Functional motor (median pull force and percent success in motor task) and sensory metrics (forelimb paw withdrawal thresholds) were collected both pre-injury and throughout rehabilitation. Nerves stained using Gomori's trichrome were assessed quantitatively and qualitatively. RESULTS: The sham ES group did not recover their pre-injury baseline functional outcomes. In contrast, the TNS and PNS groups fully recovered following injury, with no difference in functional outcomes between the pre-injury baseline and the final week of rehabilitation (P > 0.05, all). Histomorphology results demonstrated no quantitative difference, but qualitative differences in architecture were evident. CONCLUSIONS: Electrical stimulation of the trigeminal nerve or the injured nerve improved the functional outcomes of nerve regeneration in rodents. Histomorphology results of nerves from the TNS group support the proposed central mechanisms. This is an important step in translating this therapy as an adjunct, non-invasive treatment for high, mixed nerve injuries in humans.
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Traumatismos dos Nervos Periféricos , Roedores , Animais , Ratos , Estimulação Elétrica/métodos , Membro Anterior , Nervo Mediano , Regeneração Nervosa/fisiologia , Traumatismos dos Nervos Periféricos/cirurgia , Ratos Endogâmicos Lew , Recuperação de Função Fisiológica/fisiologia , Nervo TrigêmeoRESUMO
SUMMARY: The Emergency Medical Treatment and Labor Act (EMTALA) was enacted by Congress in 1986 to protect uninsured patients against economic discrimination. Although this law has been established for several decades, recent passage of the No Surprises Act may invoke new implications for the health care system under EMTALA. Therefore, it is worthwhile to review EMTALA's applications to the practice of plastic surgery and review EMTALA in the context of the recently passed No Surprises Act. First, providers are mandated by EMTALA to administer a medical screening examination to any patient presenting for emergent care. Second, providers must administer medical stabilization if the medical screening examination reveals an emergent condition. If the hospital lacks specialized capabilities to provide stabilizing care, they are required to transfer the patient to a facility that can provide care. Although EMTALA's provisions protect patients and provide them with leverage to obtain emergency care, the act has been associated with out-of-network, or "surprise," medical bills for the insured population and, ultimately, may be detrimental to plastic surgeons in emergency settings. The concerns related to EMTALA within plastic surgery involve the overburdening of surgeons at tertiary care centers because of uncompensated care and high rates of interfacility transfers. In addition, the recent passage of the No Surprises Act to end out-of-network emergency bills may further impact care provided by plastic surgeons in emergency settings under EMTALA's mandate. Potential methods to address these concerns include increasing on-call reimbursement rates and implementation of emergency department telemedicine services.
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Serviço Hospitalar de Emergência , Telemedicina , Humanos , Estados Unidos , Tratamento de Emergência , Transferência de Pacientes , Pessoas sem Cobertura de Seguro de SaúdeRESUMO
Career-related injuries and disorders in professional musicians are prevalent across all their respective instruments and fields. They often endure long hours of intensive practice that demand high levels of precision, dexterity, and flexibility of their head, neck, hands, and upper extremities. Unlike the average patient, musicians are sensitive to even mild symptoms and deficits that can interfere with performance, which can potentially be career-threatening. Increasing attention to the care of musicians motivated performing arts medicine to tailor the practice to their individual and unique needs. Plastic surgeons are at the forefront of this practice; however, there are very limited reviews discussing plastic surgery management of the common injuries and disorders in musicians. This article reviews the most relevant literature of the past several decades regarding treatment modalities of the most common conditions endured by professional instrumentalists, with an emphasis on surgical considerations in the field of plastic surgery. A thorough literature search was performed for articles that encompass the interface between plastic surgery and musicians. We examined disorders of the head, ears, eyes, nose, throat, hands, and upper extremities including stress velopharyngeal incompetence, disruption of the embouchure, nerve entrapments, arthritis, traumatic injuries, focal dystonia, Linburg-Comstock syndrome, and overuse disorder. Overall, the goal of this review is to provide a summary of the existing and successful procedures performed to address prevalent musician conditions.
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Artrite , Procedimentos de Cirurgia Plástica , Cirurgiões , Humanos , Mãos , Extremidade SuperiorRESUMO
BACKGROUND: This study sought to examine risk factors for venous thromboembolism in transfeminine vaginoplasty. Secondarily, the authors outline reasons why patients are not adequately classified for research purposes despite using relevant queried codes. METHODS: Transgender patients undergoing vaginoplasty were identified with diagnostic and procedure-specific codes using a national surgical database from 2010 through 2019. RESULTS: There were 457 transgender vaginoplasties performed, with 24 wound dehiscences, 17 unplanned reoperations, and 12 surgical site infections. With zero cases of venous thromboembolism, risk factor analysis was deferred. CONCLUSIONS: Heterogeneity in coding practices for gender-affirming surgery led to an uncharacteristically small cohort of transfeminine vaginoplasty patients captured in the database. Current diagnostic and procedure-specific codes are nonspecific and unbundled, hindering accurate assessment of the incidence of standard surgical complications.
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Cirurgia de Readequação Sexual , Pessoas Transgênero , Transexualidade , Tromboembolia Venosa , Feminino , Humanos , Tromboembolia Venosa/cirurgia , Estudos Retrospectivos , Transexualidade/cirurgiaRESUMO
Background: Out-of-network, or "surprise" bills, have grown common in recent years and have raised substantial concern for patients. Congress recently enacted the No Surprises Act, effective on January 1, 2022, ending the majority of out-of-network bills for privately insured patients. The aim of this review is to briefly summarize the history of surprise billing, describe the regulations of the No Surprises Act, and examine the impact this legislation will have on the field of plastic surgery. Methods: A PubMed and Google Scholar literature search was conducted on out-of-network billing, or surprise bills, and the No Surprises Act. Media outlets, governmental agencies, and local and national medical organizations were additionally queried for surprise billing and the No Surprises Act. Results: Under the No Surprises Act, privately insured patients are protected from surprise medical bills in emergency and nonemergency settings, and uninsured or self-pay patients must be provided a good faith estimate of service fees before receiving nonemergent care. Plastic surgeons may consent patients to receive out-of-network bills if consent is obtained at least 72 hours before rendering a nonemergency service. Despite these patient protections, this act may influence plastic surgeons' reimbursement rates and incentivize surgeons to alter their network status. Conclusions: The No Surprises Act provides significant protections for patients. However, it may have adverse effects for plastic surgeons. Plastic surgeons will only get paid in-network fees while providing care to patients unless consent is properly obtained in a nonemergent setting.
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Since the piezoelectric quality of bone was discovered in 1957, scientists have applied exogenous electrical stimulation for the purpose of healing. Despite the efforts made over the past 60 years, electronic bone growth stimulators are not in common clinical use. Reasons for this include high cost and lack of faith in the efficacy of bone growth stimulators on behalf of clinicians. The purpose of this narrative review is to examine the preclinical body of literature supporting electrical stimulation and its effect on bone properties and elucidate gaps in clinical translation with an emphasis on device specifications and mechanisms of action. When examining these studies, trends become apparent. In vitro and small animal studies are successful in inducing osteogenesis with all electrical stimulation modalities: direct current, pulsed electromagnetic field, and capacitive coupling. However, large animal studies are largely unsuccessful with the non-invasive modalities. This may be due to issues of scale and thickness of tissue planes with varying levels of resistivity, not present in small animal models. Additionally, it is difficult to draw conclusions from studies due to the varying units of stimulation strength and stimulation protocols and incomplete device specification reporting. To better understand the disconnect between the large and small animal model, the authors recommend increasing scientific rigor for these studies and reporting a novel minimum set of parameters depending on the stimulation modality.
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Noninvasive electronic bone growth stimulators (EBGSs) have been in clinical use for decades. However, systematic reviews show inconsistent and limited clinical efficacy. Further, noninvasive EBGS studies in small animals, where the stimulation electrode is closer to the fracture site, have shown promising efficacy, which has not translated to large animals or humans. We propose that this is due to the weaker electric fields reaching the fracture site when scaling from small animals to large animals and humans. To address this gap, we measured the electric field strength reaching the bone during noninvasive EBGS therapy in human and sheep cadaver legs and in finite element method (FEM) models of human and sheep legs. During application of 1100 V/m with an external EBGS, only 21 V/m reached the fracture site in humans. Substantially weaker electric fields reached the fracture site during the later stages of healing and at increased bone depths. To augment the electric field strength reaching the fracture site during noninvasive EBGS therapy, we introduced the Injectrode, an injectable electrode that spans the distance between the bone and subcutaneous tissue. Our study lays the groundwork to improve the efficacy of noninvasive EBGSs by increasing the electric field strength reaching the fracture site.
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Terapia por Estimulação Elétrica , Fraturas Ósseas , Humanos , Animais , Ovinos , Fraturas Ósseas/terapia , Osso e Ossos , Osteogênese , Modelos AnimaisRESUMO
Orthopedic fractures have a significant impact on patients in the form of economic loss and functional impairment. Beyond the standard methods of reduction and fixation, one adjunct that has been explored since the late 1970s is electrical stimulation. Despite robust evidence for efficacy in the preclinical arena, human trials have mixed results, and this technology is not widely accepted. The purpose of this review is to examine the body of literature supporting electrical stimulation for the purpose of fracture healing in humans with an emphasis on device specifications and stimulation protocols and delineate a minimum reporting checklist for future studies of this type. We have isolated 12 studies that pertain to the administration of electrical stimulation for the purpose of augmenting fracture healing in humans. Of these, one was a direct current electrical stimulation study. Six studies utilized pulsed electromagnetic field therapy and five used capacitive coupling. When examining these studies, the device specifications were heterogenous and often incomplete in what they reported, which rendered studies unrepeatable. The stimulation protocols also varied greatly study to study. To demonstrate efficacy of electrical stimulation for fractures, the authors recommend isolating a fracture type that is prone to nonunion to maximize the electrical stimulation effect, a homogenous study population so as to not dilute the effect of electrical stimulation, and increasing scientific rigor in the form of pre-registration, blinding, and sham controls. Finally, we introduce the critical components of minimum device specification reporting for repeatability of studies of this type.
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BACKGROUND: There is evidence that changes to the midface and lower third of the face in isolation contribute significantly to one's perception of the overall facial age. Since the spread of the coronavirus disease 2019 (COVID-19), mask wearing has become commonplace. To date, there have been no studies that explore how covering the lower third of the face impacts the perception of age. OBJECTIVES: The authors hypothesized that covering the lower third of the face with a mask will make a person appear younger. METHODS: One hundred consecutive plastic surgery patients were photographed in a standardized fashion, both masked and unmasked. A questionnaire for factors known to contribute to facial aging was administered. These photographs were randomized to 6 judges who estimated the patients' age and also quantified facial rhytids with the validated Lemperle wrinkle assessment score of 6. Data were analyzed using PROC MIXED analysis. RESULTS: Masked patients on average appeared 6.17% younger (mean difference = 3.16 years, P < 0.0001). Wrinkle assessment scores were 9.81% lower in the masked group (mean difference = 0.21, P = 0.0003). All subgroups appeared younger in a mask except for patients aged 18 to 40 years chronological age (P = 0.0617) and patients BMI > 35 (P = 0.5084). CONCLUSIONS: The mask group appeared younger and had lower overall and visible wrinkle assessment scores when compared with the unmasked group. This has implications for our understanding of the contributions of the lower third of the face to overall perceived facial age.