title: Not all reasons for difficult peripheral nerve blocks are at the proximal end of the needle.
authors.forename: Matthias
authors.initials: M
authors.lastname: Hübler
authors.forename: Sebastian N
authors.initials: SN
authors.lastname: Stehr
mesh_terms: D004868:Equipment Failure; D005260:Female; D006801:Humans; D008160:Lumbosacral Plexus; D009339:Needles; D009407:Nerve Block / Q000295:instrumentation; D009767:Obesity, Morbid; D012584:Sciatic Nerve