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This study demonstrates a significant reduction in peri-operative blood loss after THA with topically applied ε-ACA. The application of ε-ACA reduced costs by lowering transfusion rates and did not increase thrombo-embolic events. ε-ACA is safe and effective in reducing blood loss and cost-efficient in THA.

Background: Prior studies have demonstrated that depression is an independent risk factor for developing a prosthetic joint infection (PJI) after total joint arthroplasty (TJA). To our knowledge, there is no literature examining whether PJI or aseptic failure increases the risk of developing a new mental health diagnosis. Methods: PearlDiver Patient Database (Colorado Springs, CO) was used to identify 80,826 patients who underwent TJA without a pre-existing diagnosis of depression, anxiety, a stress and/or adjustment disorder, and/or current use of a selective serotonin reuptake inhibitor within the year prior to surgery. The odds of developing a new mental health issue or being prescribed a selective serotonin reuptake inhibitor within 1 year of an uncomplicated TJA was compared to those who developed PJI or mechanical failure within 90 days after TJA as well as to those who subsequently underwent revision surgery within 30 days of either complication using Fisher's exact test and Baptista-Pike. Results: A total of 6474 (8%) patients were diagnosed with a new mental health issue after TJA. PJI or mechanical failure led to significantly higher odds of new diagnoses with an odds ratio of 1.67 (95% confidence interval ¼ 1.26, 2.22) and 1.57 (1.24, 2.00), respectively. Undergoing revision surgery for PJI or mechanical failure increased the odds of developing a new mental health diagnosis to 2.10 (1.29, 3.42) and 2.24 (1.36, 3.72), respectively. There was no significant difference comparing those who developed PJI vs those who sustained mechanical complications. Conclusion: Patients who sustain complications after TJA are at increased odds of receiving a new mental health diagnosis, an effect further amplified if revision surgery is required.

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Randomized clinical trials (RCTs) are the gold standard for comparing medical treatments. However, pediatric surgical RCTs are uncommon. We sought the opinions of parents whose children had undergone reconstructive nerve surgery regarding participating in research studies. Twenty-nine of 30 parents indicated they would enroll their child in a research study, and 24 of these would enroll in a surgical RCT. However, the most common reason for willingness to participate was a desire to help their child, demonstrating a fundamental misunderstanding of RCTs. The burden is on the researcher to ascertain the subject’s level of understanding before consenting to randomization.