RT Journal Article SR Electronic T1 Review: femoral nerve block may be the most effective option for pain relief following total knee replacement JF Evidence Based Nursing JO Evid Based Nurs FD BMJ Publishing Group Ltd and RCN Publishing Company Ltd SP 57 OP 57 DO 10.1136/eb-2014-101918 VO 18 IS 2 A1 Aaron J Krych A1 Mark W Pagnano YR 2015 UL http://ebn.bmj.com/content/18/2/57.abstract AB