RT Journal Article SR Electronic T1 Systematic sonographic and evoked motor identification of the nerve to vastus medialis during adductor canal block JF Regional Anesthesia & Pain Medicine JO Reg Anesth Pain Med FD BMJ Publishing Group Ltd SP rapm-2019-101232 DO 10.1136/rapm-2019-101232 A1 Joshua Dooley A1 William Michael Bullock A1 Amanda H Kumar A1 David B MacLeod A1 Jeffrey Gadsden YR 2020 UL http://rapm.bmj.com/content/early/2020/05/18/rapm-2019-101232.abstract AB