{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,17]],"date-time":"2026-03-17T18:17:38Z","timestamp":1773771458635,"version":"3.50.1"},"reference-count":5,"publisher":"Journal of Neurosurgery Publishing Group (JNSPG)","issue":"6","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["SPI"],"published-print":{"date-parts":[[2011,6]]},"abstract":"<jats:p>Iatrogenic vascular injury is a rare but potentially devastating complication of cervical spine instrumentation. The authors report on a patient who developed an anterior spinal artery pseudoaneurysm associated with delayed subarachnoid hemorrhage after undergoing odontoid screw placement 14 months earlier. This 86-year-old man presented with spontaneous subarachnoid hemorrhage (Fisher Grade 4) and full motor strength on neurological examination. Imaging demonstrated pseudarthrosis of the odontoid process, extension of the odontoid screw beyond the posterior cortex of the dens, and a pseudoaneurysm arising from an adjacent branch of the anterior spinal artery. Due to the aneurysm's location and lack of active extravasation, endovascular treatment was not attempted. Posterior C1\u20132 fusion was performed to treat radiographic and clinical instability of the C1\u20132 joint. Postoperatively, the patient's motor function remained intact. Almost all cases of vascular injury related to cervical spine instrumentation are recognized at surgery. To the authors' knowledge, this is the first report of delayed vascular injury following an uncomplicated cervical fixation. This case further suggests that the risk of this phenomenon may be elevated in cases of failed fusion.<\/jats:p>","DOI":"10.3171\/2011.1.spine10561","type":"journal-article","created":{"date-parts":[[2011,3,11]],"date-time":"2011-03-11T17:13:46Z","timestamp":1299863626000},"page":"715-718","source":"Crossref","is-referenced-by-count":12,"title":["Delayed subarachnoid hemorrhage following failed odontoid screw fixation"],"prefix":"10.3171","volume":"14","author":[{"given":"David A.","family":"Wilson","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"David J.","family":"Fusco","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Nicholas","family":"Theodore","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1754","reference":[{"key":"b1-spine10561","series-title":"Surg Neurol","first-page":"300","article-title":"Vertebral artery complications in anterior approaches to the cervical spine: report of two cases and review of literature","volume":"59","author":"Daentzer","year":"2003"},{"key":"b2-spine10561","series-title":"Neurosurgery","doi-asserted-by":"publisher","first-page":"1","DOI":"10.1227\/00006123-198001000-00001","article-title":"Relation of cerebral vasospasm to subarachnoid hemorrhage visualized by computerized tomographic scanning","volume":"6","author":"Fisher","year":"1980"},{"key":"b3-spine10561","series-title":"Acta Neurochir (Wien)","doi-asserted-by":"publisher","first-page":"375","DOI":"10.1007\/s00701-005-0669-1","article-title":"Vascular injury and complication in neurosurgical spine surgery","volume":"148","author":"Inamasu","year":"2006"},{"key":"b4-spine10561","series-title":"Spine","doi-asserted-by":"publisher","first-page":"779","DOI":"10.1097\/BRS.0b013e31816957a7","article-title":"Vertebral artery injury during cervical spine surgery: a survey of more than 5600 operations","volume":"33","author":"Neo","year":"2008"},{"key":"b5-spine10561","series-title":"Surg Neurol","doi-asserted-by":"publisher","first-page":"29","DOI":"10.1016\/S0090-3019(00)00338-4","article-title":"Vertebral artery pseudoaneurysm complicating posterior C1\u20132 transarticular screw fixation: case report","volume":"55","author":"Prabhu","year":"2001"}],"container-title":["Journal of Neurosurgery: Spine"],"original-title":[],"link":[{"URL":"https:\/\/thejns.org\/view\/journals\/j-neurosurg-spine\/14\/6\/article-p715.xml","content-type":"text\/html","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/thejns.org\/downloadpdf\/journals\/j-neurosurg-spine\/14\/6\/article-p715.xml","content-type":"text\/html","content-version":"vor","intended-application":"syndication"},{"URL":"https:\/\/thejns.org\/downloadpdf\/journals\/j-neurosurg-spine\/14\/6\/article-p715.xml","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,4,15]],"date-time":"2023-04-15T22:16:56Z","timestamp":1681597016000},"score":1,"resource":{"primary":{"URL":"https:\/\/thejns.org\/view\/journals\/j-neurosurg-spine\/14\/6\/article-p715.xml"}},"subtitle":["Case report"],"short-title":[],"issued":{"date-parts":[[2011,6]]},"references-count":5,"journal-issue":{"issue":"6"},"URL":"https:\/\/doi.org\/10.3171\/2011.1.spine10561","relation":{},"ISSN":["1547-5654"],"issn-type":[{"value":"1547-5654","type":"print"}],"subject":[],"published":{"date-parts":[[2011,6]]}}}