RT Journal Article SR Electronic T1 Analysis of Contrast Spread of a Modified Posterior Approach to Lumbosacral Plexus Blockade in a Cadaver Model JF Regional Anesthesia & Pain Medicine JO Reg Anesth Pain Med FD BMJ Publishing Group Ltd SP 16 OP 16 DO 10.1136/rapm-00115550-199823031-00016 VO 23 IS Suppl 1 A1 Marc A. Huntoon A1 Richard A. Yeasting YR 1998 UL http://rapm.bmj.com/content/23/Suppl_1/16.abstract AB