Background: Publication in peer-reviewed journals is a duty and privilege. It is essential to the advancement of evidence-based medicine and often used as a proxy for academic achievement, contributing to decisions around promotion in academia. Within plastic surgery, authors have historically been male surgeons affiliated with academic institutions, lacking representation of women, private practice, medical students, and international collaboration. This study analyzes differences in authors' gender, practice affiliation, degree of education, and international collaboration in articles published in Plastic and Reconstructive Surgery, which was chosen as the representative journal given its high impact factor (3.946) and consistent ranking as the number one journal in plastic surgery worldwide. Methods: A list of Breast, Cosmetic, and Hand/Peripheral Nerve articles published between 2006 and 2019 was compiled from the online archive of Plastic and Reconstructive Surgery. Demographic author characteristics were recorded, and statistical analyses were performed to identify trends over time. Results: A total of 2688 articles were analyzed. The proportion of articles written by female authors in the Breast category, authors in private practice with academic affiliation in the Cosmetic section, and U.S. collaboration with other countries increased over time (p = 0.038, p = 0.029, p < 0.001, respectively). First authors with bachelor's, master's, and doctorate degrees have also been contributing increasingly. Conclusions: This analysis revealed increasing demographic heterogeneity of authors in Plastic and Reconstructive Surgery over time, with increasing contributions from women, surgeons in private practice with academic affiliation, medical students, and international collaborations. The Journal is capturing contributions from an increasingly diverse authorship, consistent with the changing demographics of plastic surgeons.

Background Preparation of the internal mammary artery (IMA) is a critical step in autologous breast reconstruction. Intraoperatively, there is limited opportunity for residents to practice this skill. Porcine models provide highly realistic simulation for vascular surgery; however, use of live laboratory pigs is expensive, inconvenient, and offers limited opportunity for repetitive training. We aimed to develop an inexpensive and effective training model for IMA preparation. This article describes creation of a novel microsurgical model using cadaveric chest walls of Wisconsin Miniature Swine embedded in a modified mannequin thorax and augmented with a blue-blood perfusion system. Methods Anatomic comparison: five porcine chest walls were dissected, and various anatomic measurements were made for anatomic comparison to existing human data in the literature. Model assembly: the chest wall is prepared by cannulating the proximal and distal ends of the internal mammary vessels with angiocatheters, which are then connected to the blue-blood perfusion system. The model is assembled in four layers including: (1) a mannequin thorax with a window removed to expose the first to fourth intercostal spaces, bilaterally, (2) a layer of foam simulating fat, (3) the perfused pig chest wall, and (4) a second mannequin shell placed posteriorly for support. Results The porcine chest walls are similar to humans with regards to vessel size and location. This model can be assembled quickly, with a one-time approximate cost of $55.00, and allows for six training sessions per specimen. The model allows residents to practice the key steps of IMA preparation including dissection, elevation of perichondria, and vascular anastomosis while working at a depth that closely simulates the human thorax. Continuous blue-blood perfusion provides immediate feedback on anastomosis quality. Conclusion Overall, this novel model can provide inexpensive and realistic simulation of internal mammary vessel preparation and anastomosis.

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