title: Brief reports: a comparison of an injection cephalad or caudad to the division of the sciatic nerve for ultrasound-guided popliteal block: a prospective randomized study.
abstract: BACKGROUND
  The optimal site for local anesthetic injection during ultrasound-guided sciatic popliteal block remains controversial.
  
  
  METHODS
  Patients were randomized to receive 25 mL ropivacaine 0.75% around the sciatic nerve cephalad to the peroneal-tibial division in group A (n = 51) or caudad to the division in group B (n = 51). The sensory and motor blocks were evaluated every 5 minutes up to 30 minutes.
  
  
  RESULTS
  Rates of complete sensory block and surgical anesthesia were superior in group B (P < 0.0001).
  
  
  CONCLUSIONS
  The caudad technique provided better surgical anesthesia.
authors: Département d'Anesthésie-Réanimation, Unité de Recherche en Traumatologie-Urgence-Soins Intensifs, Centre Hospitalier Affilié Universitaire de Québec, Hôpital de l'Enfant-Jésus, Université Laval, Québec, Canada.
authors: Geneviève
authors: G
authors: Germain
authors: Simon
authors: S
authors: Lévesque
authors: Nicolas
authors: N
authors: Dion
authors: Marie-Josée
authors: MJ
authors: Nadeau
authors: Dany
authors: D
authors: Coté
authors: Pierre C
authors: PC
authors: Nicole
authors: Alexis F
authors: AF
authors: Turgeon
mesh_terms: D000328:Adult; D000577:Amides / Q000008:administration & dosage*; D000779:Anesthetics, Local / Q000008:administration & dosage*; D005260:Female; D006801:Humans; D007267:Injections; D008297:Male; D008875:Middle Aged; D009043:Motor Activity / Q000187:drug effects; D009046:Motor Neurons / Q000187:drug effects; D009407:Nerve Block / Q000379:methods*; D011446:Prospective Studies; D011792:Quebec; D012044:Regression Analysis; D000077212:Ropivacaine; D012584:Sciatic Nerve / Q000000981:diagnostic imaging*; D012677:Sensation / Q000187:drug effects; D011984:Sensory Receptor Cells / Q000187:drug effects; D018084:Ultrasonography, Interventional
chemical_list: D000577:Amides; D000779:Anesthetics, Local; D000077212:Ropivacaine