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While injuries among collegiate athletes are common and well-studied, there have been no studies comparing which sports and injury types have the highest operation rates. This information would be valuable for athlete governing bodies and providers to improve player safety. Our hypothesis was the surgery incidence rates vary substantially between sports and injury types, with football and knee injuries representing the sport and injury type with the highest respective surgery rates.This was a descriptive epidemiology study of all injuries requiring surgery as recorded in the National Collegiate Athletic Association (NCAA) Injury Surveillance Program (ISP) for academic years 2004-2005 to 2013-2014. Surgery incidence rates (and 95% confidence intervals, CI) were calculated for each sport (per 10,000 athletic exposures [AE]) and for the most common injury types, by academic year. In addition, absolute numbers of performed surgeries were calculated as well as rates of return to sport.Sports with the highest surgery incidence rate (per 10,000 AEs) were women's gymnastics (8.9; 95% CI 7.2-10.9), men's football (6.1; 95% CI 5.8-6.4), and men's wrestling (5.3; 95% CI 4.5-6.3). Absolute numbers of injury-related surgeries performed were greatest for men's football (n = 31,043), women's basketball (6,625), and men's basketball (5,717). Anterior cruciate ligament tears had the greatest surgery incidence rate per 100,000 AEs for all sports combined (7.95; 95% CI = 7.5 to 8.5), and also represented the injuries with the lowest rate of return to sport.Women's gymnastics, men's football, and men's and women's basketball are NCAA sports with an elevated risk of injury requiring of surgery. The results from this study can guide the NCAA and providers regarding which sports should be the focus of future research, new injury prevention strategies, and healthcare personnel allocation during events.

Study design This was a retrospective cohort study. Objective Identify the independent risk factors for 30- and 90-day readmission because of surgical site infection (SSI) in patients undergoing elective posterior lumbar fusion (PLF). Summary of background data SSI is a significant cause of morbidity in the 30- and 90-day windows after hospital discharge. There remains a gap in the literature on independent risk factors for readmission because of SSI after PLF procedures. In addition, readmission for SSI after spine surgery beyond the 30-day postoperative period has not been well studied. Methods A retrospective analysis was performed on data from the 2012 to 2014 Healthcare Cost and Utilization Project Nationwide Readmissions Database. The authors identified 65,121 patients who underwent PLF. There were 191 patients (0.30%) readmitted with a diagnosis of SSI in the 30-day readmission window, and 283 (0.43%) patients readmitted with a diagnosis of SSI in the 90-day window. Baseline patient demographics and medical comorbidities were assessed. Bivariate and multivariate analyses were performed to examine the independent risk factors for readmission because of SSI. Results In the 30-day window after discharge, this study identified patients with liver disease, uncomplicated diabetes, deficiency anemia, depression, psychosis, renal failure, obesity, and Medicaid or Medicare insurance as higher risk patients for unplanned readmission with a diagnosis of SSI. The study identified the same risk factors in the 90-day window with the addition of diabetes with chronic complications, chronic pulmonary disease, and pulmonary circulation disease. Conclusions Independent risk factors for readmission because of SSI included liver disease, uncomplicated diabetes, obesity, and Medicaid insurance status. These findings suggest that additional intervention in the perioperative workup for patients with these risk factors may be necessary to lower unplanned readmission because of SSI after PLF surgery.

The authorship demographics in the American Journal of Neuroradiology ( AJNR ) have been changing with time. The clinical demands on neuroradiologists have increased recently. We sought to determine whether there has been a commensurate shift toward more nonradiologist, PhD, multi-institutional, and

Background: Independent orthopaedic practices in the United States have become attractive targets for acquisition by hospital systems and private equity (PE) firms because of the increasing demand for outpatient surgery. Consolidation in this market will have notable effects on the delivery and cost of orthopaedic services. In this study, we identified major trends in orthopaedic practice acquisitions over the past decade. Methods: A list of acquisition deals between 2010 and 2019 was compiled from four business databases: S&P Capital IQ, CB Insights, Thomson ONE, and Zephyr. Deals were categorized as PE-backed or not PE-backed. Headquarter locations of the buying and selling companies and transaction value were obtained for each deal when available. Results: A total of 68 deals were obtained of which 5 (7.4%) were PE-backed. The buyer and seller were located in the same state in 50 (73.5%) of the deals. Transaction values were available for only four deals ranging from $2.52 million to $35 million. Conclusion: Our results suggest that consolidation of orthopaedic practices from 2010 to 2019 was driven by large healthcare entities rather than PE firms. Furthermore, intrastate acquisitions were markedly more common than interstate acquisitions, possibly because of greater legal feasibility and ease of clinical integration.