title: Bad needles can't do good blocks.
authors.forename: Patrice
authors.initials: P
authors.lastname: Forget
mesh_terms: D004867:Equipment Design; D005267:Femoral Nerve / Q000000981:diagnostic imaging; D006801:Humans; D009339:Needles / Q000592:standards; D009407:Nerve Block / Q000295:instrumentation*; D018084:Ultrasonography, Interventional