Efficacy of epinephrine in local infiltration analgesia on pain relief and opioid consumption following total knee arthroplasty: a randomized controlled trial.

"This study was approved by our institutional review board (study identification number 696/2560) and registered with ClinicalTrials.gov (NCT03549221). Every process of the study was performed in agreement with the principles of the Helsinki Declaration. Written informed consent was obtained from all participants. This was an unfunded study. The data that supports the results of this study is available from the corresponding author upon reasonable request. All authors declare no personal or professional conflicts of interest, and no financial support from the companies that produce and/or distribute the drugs, devices, or materials described in this report. Completed disclosure forms for this article following the ICMJE template are available on the article page, doi: 10.2340/17453674.2023.8482"