{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,24]],"date-time":"2026-07-24T15:16:42Z","timestamp":1784906202541,"version":"3.55.0"},"reference-count":18,"publisher":"Wiley","issue":"8","license":[{"start":{"date-parts":[[2020,3,3]],"date-time":"2020-03-03T00:00:00Z","timestamp":1583193600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["J of Ultrasound Medicine"],"published-print":{"date-parts":[[2020,8]]},"abstract":"<jats:sec><jats:title>Objectives<\/jats:title><jats:p>We aimed to identify the optimal lower limb position for an ultrasound (US)\u2010guided anterior approach to a sciatic nerve block.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>We included 45 patients who met the following criteria: American Society of Anesthesiologists physical status of 1 to 3, age between 18 and 80\u2009years, and scheduled to undergo knee surgery that required a sciatic nerve block. The lower limbs of each patient were placed in the following 4 positions: N, neutral; ER, external rotation of the hip (angle, 45\u00b0); ER\/F15, ER (angle, 45\u00b0) and flexion (angle, 15\u00b0) of the hip; and ER\/F45, ER (angle, 45\u00b0) and F (angle, 45\u00b0) of the hip. An investigator acquired US scans of the sciatic nerve in each position, and the visibility score and depth of the sciatic nerve from the skin were analyzed.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>The visibility scores were significantly higher in positions ER\/F15 and ER\/F45 than in positions ER and N (<jats:italic>P<\/jats:italic>\u2009&lt;\u2009.0001). However, there was no difference between the visibility scores in positions ER\/F15 and ER\/F45 (<jats:italic>P<\/jats:italic> = .0959). The depth of the sciatic nerve from the skin decreased with ER and an increase in the F angle of the hip (overall <jats:italic>P<\/jats:italic>\u2009&lt;\u2009.0001).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>Based on the visibility score and depth from the skin, ER of the hip to 45\u00b0 with a greater F angle (45\u00b0 versus 15\u00b0) of the hip appears to be the optimal position for an US\u2010guided anterior approach to a sciatic nerve block.<\/jats:p><\/jats:sec>","DOI":"10.1002\/jum.15258","type":"journal-article","created":{"date-parts":[[2020,3,3]],"date-time":"2020-03-03T12:14:38Z","timestamp":1583237678000},"page":"1641-1647","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":9,"title":["Ultrasound\u2010Guided Anterior Approach to a Sciatic Nerve Block"],"prefix":"10.1002","volume":"39","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-1759-4592","authenticated-orcid":false,"given":"Ha\u2010Jung","family":"Kim","sequence":"first","affiliation":[{"name":"Department of Anesthesiology and Pain Medicine Asan Medical Center, University of Ulsan  Seoul Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8339-3764","authenticated-orcid":false,"given":"Ki Jinn","family":"Chin","sequence":"additional","affiliation":[{"name":"Department of Anesthesia Toronto Western Hospital, University of Toronto  Toronto Ontario Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2488-9986","authenticated-orcid":false,"given":"Hyungtae","family":"Kim","sequence":"additional","affiliation":[{"name":"Department of Anesthesiology and Pain Medicine Asan Medical Center, University of Ulsan  Seoul Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hwa\u2010young","family":"Jang","sequence":"additional","affiliation":[{"name":"Department of Anesthesiology and Pain Medicine Asan Medical Center, University of Ulsan  Seoul Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Seong\u2010il","family":"Bin","sequence":"additional","affiliation":[{"name":"Department of Orthopedic Surgery Asan Medical Center, University of Ulsan  Seoul Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Young\u2010jin","family":"Ro","sequence":"additional","affiliation":[{"name":"Department of Anesthesiology and Pain Medicine Asan Medical Center, University of Ulsan  Seoul Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4881-1884","authenticated-orcid":false,"given":"Won Uk","family":"Koh","sequence":"additional","affiliation":[{"name":"Department of Anesthesiology and Pain Medicine Asan Medical Center, University of Ulsan  Seoul Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2020,3,3]]},"reference":[{"key":"e_1_2_6_2_1","doi-asserted-by":"publisher","DOI":"10.1097\/00000542-196303000-00011"},{"key":"e_1_2_6_3_1","doi-asserted-by":"publisher","DOI":"10.1213\/00000539-197507000-00020"},{"key":"e_1_2_6_4_1","doi-asserted-by":"publisher","DOI":"10.1097\/00000542-199912000-00017"},{"key":"e_1_2_6_5_1","doi-asserted-by":"publisher","DOI":"10.1213\/01.ANE.0000117224.99190.A8"},{"key":"e_1_2_6_6_1","doi-asserted-by":"publisher","DOI":"10.1097\/00000539-200207000-00038"},{"key":"e_1_2_6_7_1","doi-asserted-by":"publisher","DOI":"10.1213\/00000539-200102000-00034"},{"key":"e_1_2_6_8_1","doi-asserted-by":"publisher","DOI":"10.1097\/00000539-200210000-00052"},{"key":"e_1_2_6_9_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.egja.2012.05.004"},{"key":"e_1_2_6_10_1","doi-asserted-by":"publisher","DOI":"10.5005\/jp-journals-10027-1052"},{"key":"e_1_2_6_11_1","doi-asserted-by":"publisher","DOI":"10.1097\/EJA.0000000000000293"},{"key":"e_1_2_6_12_1","doi-asserted-by":"publisher","DOI":"10.1213\/01.ane.0000260614.32794.7b"},{"key":"e_1_2_6_13_1","doi-asserted-by":"publisher","DOI":"10.1097\/AAP.0000000000000030"},{"key":"e_1_2_6_14_1","doi-asserted-by":"publisher","DOI":"10.1097\/00115550-200811000-00005"},{"key":"e_1_2_6_15_1","doi-asserted-by":"publisher","DOI":"10.1097\/00115550-200703000-00003"},{"key":"e_1_2_6_16_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00198-009-1059-y"},{"key":"e_1_2_6_17_1","doi-asserted-by":"publisher","DOI":"10.1152\/japplphysiol.00347.2003"},{"key":"e_1_2_6_18_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1532-5415.2007.01228.x"},{"key":"e_1_2_6_19_1","doi-asserted-by":"publisher","DOI":"10.1213\/ane.0b013e3181ae09a4"}],"container-title":["Journal of Ultrasound in Medicine"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.wiley.com\/onlinelibrary\/tdm\/v1\/articles\/10.1002%2Fjum.15258","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/jum.15258","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/full-xml\/10.1002\/jum.15258","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/jum.15258","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,9,5]],"date-time":"2023-09-05T16:36:27Z","timestamp":1693931787000},"score":1,"resource":{"primary":{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/10.1002\/jum.15258"}},"subtitle":["Influence of Lower Limb Positioning on the Visibility and Depth of the Sciatic Nerve"],"short-title":[],"issued":{"date-parts":[[2020,3,3]]},"references-count":18,"journal-issue":{"issue":"8","published-print":{"date-parts":[[2020,8]]}},"alternative-id":["10.1002\/jum.15258"],"URL":"https:\/\/doi.org\/10.1002\/jum.15258","archive":["Portico"],"relation":{},"ISSN":["0278-4297","1550-9613"],"issn-type":[{"value":"0278-4297","type":"print"},{"value":"1550-9613","type":"electronic"}],"subject":[],"published":{"date-parts":[[2020,3,3]]},"assertion":[{"value":"2019-11-14","order":0,"name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"2020-02-17","order":1,"name":"accepted","label":"Accepted","group":{"name":"publication_history","label":"Publication History"}},{"value":"2020-03-03","order":2,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}]}}