title: Ultrasound standard for popliteal sciatic block: circular expansion of the paraneural sheath with the needle in-plane from lateral-to-medial in the 'reverse Sim's position'.
authors.affiliation: Taipei, Taiwan juian.lin@tmu.edu.tw.
authors.forename: J-A
authors.initials: JA
authors.lastname: Lin
authors.affiliation: Hsin-chu, Taiwan.
authors.forename: Y-J
authors.initials: YJ
authors.lastname: Lee
authors.affiliation: Taipei, Taiwan.
authors.forename: H-T
authors.initials: HT
authors.lastname: Lu
authors.affiliation: Hualien, Taiwan.
authors.forename: Y-T
authors.initials: YT
authors.lastname: Lin
mesh_terms: D006801:Humans; D009339:Needles; D009407:Nerve Block / Q000379:methods*; D056888:Patient Positioning / Q000379:methods; D012584:Sciatic Nerve / Q000000981:diagnostic imaging*; D018084:Ultrasonography, Interventional / Q000379:methods