Sato, Makoto Ultrasound-guided lumbar plexus block using three different techniques: a comparison of ultrasound image quality. [electronic resource] - Journal of anesthesia 10 2018 - 694-701 p. digital Publication Type: Comparative Study; Journal Article; Randomized Controlled Trial ISSN: 1438-8359 Standard No.: 10.1007/s00540-018-2539-z doi Subjects--Topical Terms: Abdominal MusclesAgedAnesthetics, Local--administration & dosageArthroplasty, Replacement, Hip--methodsCatheterizationCathetersFemaleHumansLumbosacral Plexus--diagnostic imagingMaleMiddle AgedNeedlesNerve Block--methodsProspective StudiesTransducersUltrasonography, Interventional--methods