Podder, Subrata Paramedian lumbar epidural catheter insertion with patients in the sitting position is equally successful in the flexed and unflexed spine. [electronic resource] - Anesthesia and analgesia Dec 2004 - 1829-1832 p. digital Publication Type: Clinical Trial; Journal Article; Randomized Controlled Trial ISSN: 0003-2999 Standard No.: 10.1213/01.ANE.0000136774.99702.14 doi Subjects--Topical Terms: AdultAnesthesia, EpiduralAnesthetics, LocalBack Pain--etiologyCatheterizationEpidural Space--anatomy & histologyFemaleHumansLidocaineLower Extremity--injuriesMalePain, Postoperative--epidemiologyPosture--physiologyProspective StudiesSpine--physiology