AUTHOR=Williams Brian A. , Ritter Marsha E. , Kennedy Patrick J. , Kmatz Alissa M. , Abdullah Leath , Scanlan Rick L. , McNiffe Nicholas J. , Fowler William M. , Patzkowski Michael S. TITLE=Case Report: Two-center case series of motor-sparing nerve blocks comprised of preservative-free midazolam–buprenorphine–clonidine–dexamethasone JOURNAL=Frontiers in Anesthesiology VOLUME=4 YEAR=2025 URL=https://www.frontiersin.org/journals/anesthesiology/articles/10.3389/fanes.2025.1535087 DOI=10.3389/fanes.2025.1535087 ISSN=2813-480X