The Effect of addition of low dose Dexmedetomedine to 0.5% Ropivacaine in single shot Ultrasonography guided Femoral Nerve Block in patients undergoing elective unilateral total knee arthroplasty: A Double Blind Randomized Control Study. International Journal of Biomedical Research, [S. l.], v. 10, n. 11, p. e5284, 2019. DOI: 10.7439/ijbr.v10i11.5284. Disponível em: https://ssjournals.co.in/index.php/ijbr/article/view/5284. Acesso em: 29 mar. 2026.