{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,13]],"date-time":"2026-03-13T22:05:11Z","timestamp":1773439511195,"version":"3.50.1"},"reference-count":23,"publisher":"Elsevier BV","license":[{"start":{"date-parts":[[2020,9,1]],"date-time":"2020-09-01T00:00:00Z","timestamp":1598918400000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/tdm\/userlicense\/1.0\/"},{"start":{"date-parts":[[2020,9,1]],"date-time":"2020-09-01T00:00:00Z","timestamp":1598918400000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/legal\/tdmrep-license"}],"content-domain":{"domain":["clinicalkey.com","clinicalkey.com.au","clinicalkey.es","clinicalkey.fr","clinicalkey.jp","elsevier.com","sciencedirect.com"],"crossmark-restriction":true},"short-container-title":["World Neurosurgery"],"published-print":{"date-parts":[[2020,9]]},"DOI":"10.1016\/j.wneu.2020.06.110","type":"journal-article","created":{"date-parts":[[2020,6,22]],"date-time":"2020-06-22T02:00:42Z","timestamp":1592791242000},"page":"e971-e975","update-policy":"https:\/\/doi.org\/10.1016\/elsevier_cm_policy","source":"Crossref","is-referenced-by-count":8,"special_numbering":"C","title":["Extraforaminal Vertebral Artery Anomalies and Their Associated Surgical Implications: An Epidemiologic and Anatomic Report on 1000 Patients"],"prefix":"10.1016","volume":"141","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-7067-0689","authenticated-orcid":false,"given":"Michael","family":"Zhang","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Fara","family":"Dayani","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"David A.","family":"Purger","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Tene","family":"Cage","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Marco","family":"Lee","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Mahesh","family":"Patel","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Harminder","family":"Singh","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"78","reference":[{"key":"10.1016\/j.wneu.2020.06.110_bib1","doi-asserted-by":"crossref","first-page":"2035","DOI":"10.1097\/BRS.0b013e3181c9f3d4","article-title":"Vertebral artery anatomy: a review of two hundred fifty magnetic resonance imaging scans","volume":"35","author":"Eskander","year":"2010","journal-title":"Spine"},{"key":"10.1016\/j.wneu.2020.06.110_bib2","series-title":"Embryology of the vertebral artery. Pathology and Surgery Around the Vertebral Artery","first-page":"5","author":"George","year":"2011"},{"key":"10.1016\/j.wneu.2020.06.110_bib3","doi-asserted-by":"crossref","first-page":"2422","DOI":"10.1097\/BRS.0b013e31818938d1","article-title":"Anatomical variations of the vertebral artery segment in the lower cervical spine: analysis by three-dimensional computed tomography angiography","volume":"33","author":"Hong","year":"2008","journal-title":"Spine"},{"key":"10.1016\/j.wneu.2020.06.110_bib4","doi-asserted-by":"crossref","first-page":"4188","DOI":"10.1007\/s00586-016-4708-9","article-title":"Quantitative analysis of unusual entrance of the vertebral artery into the cervical foramen (V2 segment) and its clinical implications","volume":"25","author":"Kim","year":"2016","journal-title":"Eur Spine J"},{"issue":"suppl 1","key":"10.1016\/j.wneu.2020.06.110_bib5","first-page":"ONS20","article-title":"Anatomical variations of the V2 segment of the vertebral artery","volume":"59","author":"Bruneau","year":"2006","journal-title":"Neurosurgery"},{"key":"10.1016\/j.wneu.2020.06.110_bib6","doi-asserted-by":"crossref","first-page":"2526","DOI":"10.1007\/s00586-013-2883-5","article-title":"An analysis of the anatomic features of the cervical spine using computed tomography to select safer screw insertion techniques","volume":"22","author":"Nishinome","year":"2013","journal-title":"Eur Spine J"},{"key":"10.1016\/j.wneu.2020.06.110_bib7","doi-asserted-by":"crossref","first-page":"228","DOI":"10.1097\/BRS.0000000000000120","article-title":"Variance of cervical vertebral artery measured by CT angiography and its influence on C7 pedicle anatomy","volume":"39","author":"Wakao","year":"2014","journal-title":"Spine"},{"key":"10.1016\/j.wneu.2020.06.110_bib8","doi-asserted-by":"crossref","first-page":"78","DOI":"10.1159\/000351786","article-title":"Is vertebral artery hypoplasia a predisposing factor for posterior circulation cerebral ischemic events? A comprehensive review","volume":"70","author":"Katsanos","year":"2013","journal-title":"Eur Neurol"},{"key":"10.1016\/j.wneu.2020.06.110_bib9","doi-asserted-by":"crossref","first-page":"168","DOI":"10.1186\/s12883-017-0951-x","article-title":"Are the anomalous vertebral arteries more hypoplastic?: retrospective linear mixed model approach","volume":"17","author":"Kim","year":"2017","journal-title":"BMC Neurol"},{"key":"10.1016\/j.wneu.2020.06.110_bib10","doi-asserted-by":"crossref","first-page":"360","DOI":"10.1016\/j.aanat.2014.04.005","article-title":"Anomalous course and diameter of left-sided vertebral arteries\u2014significance and predisposing factors in clinical practice","volume":"196","author":"Kosla","year":"2014","journal-title":"Ann Anat"},{"key":"10.1016\/j.wneu.2020.06.110_bib11","doi-asserted-by":"crossref","first-page":"715","DOI":"10.1016\/j.wneu.2017.07.027","article-title":"Iatrogenic vertebral artery injury during anterior cervical spine surgery: a systematic review","volume":"106","author":"Guan","year":"2017","journal-title":"World Neurosurg"},{"key":"10.1016\/j.wneu.2020.06.110_bib12","doi-asserted-by":"crossref","first-page":"259","DOI":"10.3988\/jcn.2012.8.4.259","article-title":"A\u00a0quantitative comparison of the vertebral artery and transverse foramen using CT angiography","volume":"8","author":"Kim","year":"2012","journal-title":"J\u00a0Clin Neurol (Seoul, Korea)"},{"key":"10.1016\/j.wneu.2020.06.110_bib13","author":"Magklara"},{"key":"10.1016\/j.wneu.2020.06.110_bib14","doi-asserted-by":"crossref","first-page":"299","DOI":"10.3171\/spi.2004.1.3.0299","article-title":"The V2 segment of the vertebral artery and its branches","volume":"1","author":"Ozgen","year":"2004","journal-title":"J\u00a0Neurosurg Spine"},{"key":"10.1016\/j.wneu.2020.06.110_bib15","doi-asserted-by":"crossref","first-page":"E1053","DOI":"10.1097\/BRS.0000000000000447","article-title":"Vertebral artery anomalies at the craniovertebral junction in the US population","volume":"39","author":"O'Donnell","year":"2014","journal-title":"Spine"},{"key":"10.1016\/j.wneu.2020.06.110_bib16","doi-asserted-by":"crossref","first-page":"383","DOI":"10.1055\/s-0035-1550091","article-title":"Surgical anatomy of the uncinate process and transverse foramen determined by computed tomography","volume":"5","author":"Park","year":"2015","journal-title":"Glob Spine J"},{"key":"10.1016\/j.wneu.2020.06.110_bib17","doi-asserted-by":"crossref","first-page":"402","DOI":"10.3171\/2011.12.SPINE11541","article-title":"Analysis of the uncinate processes of the cervical spine: an anatomical study","volume":"16","author":"Tubbs","year":"2012","journal-title":"J\u00a0Neurosurg Spine"},{"key":"10.1016\/j.wneu.2020.06.110_bib18","doi-asserted-by":"crossref","first-page":"e315","DOI":"10.1016\/j.wneu.2020.01.191","article-title":"Predictors of cervical vertebral and carotid artery dissection during blunt trauma: experience from a level 1 trauma center","volume":"137","author":"Ho","year":"2020","journal-title":"World Neurosurg"},{"key":"10.1016\/j.wneu.2020.06.110_bib19","doi-asserted-by":"crossref","first-page":"4171","DOI":"10.1007\/s00586-016-4691-1","article-title":"Vertebral artery loops in surgical perspective","volume":"25","author":"Ek\u015fi","year":"2016","journal-title":"Eur Spine J"},{"key":"10.1016\/j.wneu.2020.06.110_bib20","doi-asserted-by":"crossref","first-page":"1247","DOI":"10.1007\/s00701-013-1738-5","article-title":"The medial loop of the V2 segment of the vertebral artery and the importance of this variation in correlation with the resection safe zone and technical characteristics of spinal cages during anterior cervical approaches","volume":"155","author":"Gkekas","year":"2013","journal-title":"Acta Neurochirurg"},{"key":"10.1016\/j.wneu.2020.06.110_bib21","doi-asserted-by":"crossref","first-page":"1183","DOI":"10.1097\/01.BRS.0000067275.08517.58","article-title":"Vertebral artery loop formation: a frequent cause of cervicobrachial pain","volume":"28","author":"Paksoy","year":"2003","journal-title":"Spine"},{"key":"10.1016\/j.wneu.2020.06.110_bib22","doi-asserted-by":"crossref","first-page":"513","DOI":"10.3340\/jkns.2012.52.6.513","article-title":"Medial loop of v2 segment of vertebral artery causing compression of proximal cervical root","volume":"52","author":"Park","year":"2012","journal-title":"J\u00a0Kor Neurosurg Soc"},{"key":"10.1016\/j.wneu.2020.06.110_bib23","series-title":"Atlas of Neurosurgical Techniques. Spine and Peripheral Nerves","article-title":"Cervical spine: anterior approach","author":"Klara","year":"2006"}],"container-title":["World Neurosurgery"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S1878875020313681?httpAccept=text\/xml","content-type":"text\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S1878875020313681?httpAccept=text\/plain","content-type":"text\/plain","content-version":"vor","intended-application":"text-mining"}],"deposited":{"date-parts":[[2025,10,30]],"date-time":"2025-10-30T08:45:26Z","timestamp":1761813926000},"score":1,"resource":{"primary":{"URL":"https:\/\/linkinghub.elsevier.com\/retrieve\/pii\/S1878875020313681"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2020,9]]},"references-count":23,"alternative-id":["S1878875020313681"],"URL":"https:\/\/doi.org\/10.1016\/j.wneu.2020.06.110","relation":{},"ISSN":["1878-8750"],"issn-type":[{"value":"1878-8750","type":"print"}],"subject":[],"published":{"date-parts":[[2020,9]]},"assertion":[{"value":"Elsevier","name":"publisher","label":"This article is maintained by"},{"value":"Extraforaminal Vertebral Artery Anomalies and Their Associated Surgical Implications: An Epidemiologic and Anatomic Report on 1000 Patients","name":"articletitle","label":"Article Title"},{"value":"World Neurosurgery","name":"journaltitle","label":"Journal Title"},{"value":"https:\/\/doi.org\/10.1016\/j.wneu.2020.06.110","name":"articlelink","label":"CrossRef DOI link to publisher maintained version"},{"value":"article","name":"content_type","label":"Content Type"},{"value":"\u00a9 2020 Elsevier Inc. All rights reserved.","name":"copyright","label":"Copyright"}]}}