RETRACTED: Prevalence of unprofessional social media content among young vascular surgeons.

This article has been retracted: please see Elsevier Policy on Article Withdrawal (https://www.elsevier.com/about/our-business/policies/article-withdrawal). This article has been retracted at the request of the authors, the Editor-in-Chief and the Senior Editor of the Journal of Vascular Surgery. This article has been retracted in accordance with the Committee on Publication Ethics (COPE) Retraction Guidelines because the authors did not have permission to use the Association of Program Directors in Vascular Surgery (APDVS) directory of program directors and trainees to conduct research. In addition, the methodology, analysis and conclusions of this article were based on published but not validated criteria, judging a series of behaviors including attire, alcohol consumption, controversial political and religious comments like abortion or gun control, in which significant conscious and unconscious biases were pervasive. The methodology was in part predicated on highly subjective assessments of professionalism based on antiquated norms and a predominantly male authorship supervised the assessments made by junior, male students and trainees. The authors did not identify biases in the methodology, i.e., judging public social media posts of women wearing bikinis on off-hours as "potentially unprofessional". The goal of professionalism in medicine is to help ensure trust among patients, colleagues and hospital staff. However, professionalism has historically been defined by and for white, heterosexual men and does not always speak to the diversity of our workforce or our patients. The Editors deeply regret the failures in the Journal's peer review process which allowed this paper to be published. The Editors and the review process failed to identify errors in the design of the study, to detect unauthorized use of the data, and to recognize the conscious and unconscious biases plaguing the methodology. For this, we express our most sincere apology.

Femoral vein transposition is a durable hemodialysis access for patients who have exhausted upper extremity options.

OBJECTIVE: Access surgeons often encounter patients with end-stage renal disease who have exhausted all upper extremity hemodialysis access options. Although the lower extremity is often the next alternative, prosthetic lower extremity access can be prone to infectious complications and historically has poor patency. We describe our contemporary experience with an autogenous femoral vein transposition (FVT) arteriovenous fistula. METHODS: All FVTs performed at an academic medical center from 2006 to 2018 were analyzed. FVTs were placed after upper extremity access was deemed no longer possible by the treating surgeon. Patient demographics, comorbidities, and access history were described, and perioperative and short-term outcomes, including maturation, were analyzed. RESULTS: Twenty-one patients treated with FVT were identified. The mean age was 55.3 ± 11.1 years; 23.8% were female, and 71.4% were African American. The median body mass index was 27.1 kg/m2 (range, 17-46 kg/m2). Comorbidities included hypertension (100%), diabetes (61.9%), coronary artery disease (57.1%), congestive heart failure (47.6%), and obesity (38.1%). Twenty patients had at least one prior arm access, whereas 13 patients (61.9%) had more than three prior arm accesses. Seventeen patients (81%) had central venous stenosis or occlusion confirmed on preoperative imaging. The mean operative time was 250 minutes (range, 144-406 minutes), and estimated blood loss was 140.5 mL. Preanastomotic tapering was performed in 20 (95.2%) patients. Four (19%) patients returned to the operating room within 30 days. Thirty-day postoperative cardiac and wound complications occurred in 9.5% and 19% of patients, respectively. Distal arterial ischemia requiring revascularization occurred in one (4.8%) patient at 7 months. There were no access-related infections that resulted in fistula ligation. There was no mortality at 30 days. Successful fistula maturation rate at 6 months was 88.9%. At 1 year, primary and secondary patency rates were 65.9%, and 94.7%, respectively. CONCLUSIONS: Although autogenous FVT performed in patients without upper extremity options has a significant wound complication rate, it is associated with an outstanding maturation rate and excellent patency rates at 1 year. This access should be readily considered in hemodialysis patients without upper extremity access options.

Axillary-bifemoral and axillary-unifemoral artery grafts have similar perioperative outcomes and patency.

OBJECTIVE: It has been suggested that more bypass outflow targets for bypass grafts improve patency and outcomes. Our objective was to examine this in a multicenter contemporary series of axillary to femoral artery grafts. METHODS: The Vascular Quality Initiative database was queried for all axillary-unifemoral (AxUF) and axillary-bifemoral (AxBF) bypass grafts performed between 2010 and 2017 for claudication, rest pain, and tissue loss. Patients with acute limb ischemia were excluded. Patients' demographics and comorbidities as well as operative details and outcomes were recorded. Univariable, multivariable, and Kaplan-Meier analyses were used to assess long-term outcomes. RESULTS: There were 412 (32.9%) AxUF grafts and 839 (67.1%) AxBF grafts identified. Overall, the mean age of the patients was 68.3 years, 51.1% were male, and 84.7% were white. Compared with AxBF grafts, AxUF grafts were more often performed for urgent cases; in patients who were younger, male, nonambulatory, and diabetic; and in those with preoperative anticoagulation, critical limb ischemia, prior bypass, aneurysm repair, peripheral vascular intervention, and major amputation (P < .05 for all). There were no significant differences between AxUF and AxBF grafts in perioperative wound complications (4.2% vs 2.9%; P = .23), cardiac complications (7.3% vs 10.4%; P = .08), pulmonary complications (4.1% vs 6%, P = .18), early stenosis/occlusion (0.2% vs 0.8%; P = .22), perioperative mortality (2.9% vs 3.2%; P = .77), and length of stay (6.4 ± 5.6 days vs 6.7 ± 8 days; P = .29). The mean estimated blood loss (268.1 mL vs 348.6 mL; P < .001) and mean operative time (201 minutes vs 224.1 minutes; P < .001) were significantly lower for AxUF grafts. Kaplan-Meier analysis showed that AxUF and AxBF grafts had similar freedom from graft occlusion (62.6% vs 71.8%; P = .074), major adverse limb event-free survival (57.1% vs 66.6%; P = .052), and survival (86% vs 86%; P = .897) at 1 year. Major amputation-free survival was lower for AxUF grafts (63.7% vs 73%; P = .028). Multivariable analysis also showed that the type of graft configuration did not independently predict occlusion/death (hazard ratio [HR], 1.06; 95% confidence interval [CI], 0.77-1.46; P = .72), amputation/death (HR, 1.12; 95% CI, 0.83-1.51; P = .45), major adverse limb event/death (HR, 0.97; 95% CI, 0.73-1.3; P = .85), or mortality (HR, 0.91; 95% CI, 0.65-1.26; P = .55). Three-year survival after placement of AxUF and AxBF grafts was similar (75.1% vs 78.2%; P = .414). CONCLUSIONS: AxUF and AxBF grafts have similar perioperative and 1-year outcomes. Graft patency was not significantly different between an AxBF graft and an AxUF graft at 1 year. Overall, patients treated with these reconstructions have many comorbidities and low long-term survival.

Eagle Syndrome Presenting after Blunt Trauma.

As classically described, Eagle syndrome is an entity where patients develop pain or neurologic manifestations arising from an elongated styloid process and/or an ossified stylohyoid ligament irritating or compressing adjacent cranial nerves or the carotid arteries. Over the past few years, there have been reports of actual injury to the internal carotid artery with dissection, occlusion, and strokes. We present 3 cases identified after blunt trauma: 1 due to carotid compression and 2 due to actual injury to the internal carotid artery. Eagle syndrome should be a consideration in any patient with a carotid injury due to blunt trauma or suffering a syncopal episode which led to blunt trauma. Carotid stenting is an effective treatment modality for injury to the carotid artery when anticoagulation is contraindicated. Styloidectomy is performed for symptoms due to carotid artery compression or if there is concern for future carotid injury from the styloid process.

A model for studying human articular cartilage integration in vitro.

One of the major obstacles hindering cartilage repair is the integration of the reparative cartilage with the recipient cartilage. The purpose of this study was to develop an in vitro model that can be conveniently applied to simulate and improve the integration of tissue engineered cartilage with native articular cartilage. This model, a cartilage integration construct, consists of a cartilage explant and isolated chondrocytes. The explant was anchored to agarose gel on a culture plate as agarose gelation at 4 degrees C to seal the gap between the bottom of the explant and culture plate surface. Isolated chondrocytes were added and confined in the defect created in the center of the explant. After 4 weeks of culture, neocartilage containing proteoglycans and type II collagen was formed. Minimal integration occurred between the neocartilage and the cartilage explant, resembling the failure of cartilage integration manifested in experimental and clinical cartilage repair. In this model, agarose gel anchors the explant onto culture plate by altering temperatures and effectively prevents "leakage" of the isolated chondrocytes from the defect of the explant. This model provides a convenient simulation of the cartilage integration process in vitro and has applications in studies of cartilage integration and cartilage tissue engineering.