{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,30]],"date-time":"2026-06-30T23:58:07Z","timestamp":1782863887133,"version":"3.54.5"},"reference-count":6,"publisher":"Journal of Neurosurgery Publishing Group (JNSPG)","issue":"1","license":[{"start":{"date-parts":[[2020,7,1]],"date-time":"2020-07-01T00:00:00Z","timestamp":1593561600000},"content-version":"unspecified","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2020,7]]},"abstract":"<jats:p>This case involved a 6-year-old boy with Down syndrome, left C1 lateral mass hypertrophy, C1\u20132 rotatory subluxation, and spinal cord compression. He presented after falling down some stairs at his home. Torticollis, dysphagia, and speech delay were noted on examination. Vascular imaging showed impingement on the left vertebral artery by the anomalous C1 lateral mass. Through a posterior approach, the hypertrophic C1 lateral mass was resected, and an occiput\u2013C2 fusion was performed. Postoperatively, his torticollis and brainstem symptoms were resolved.<\/jats:p>\n                  <jats:p>\n                    The video can be found here:\n                    <jats:ext-link xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" ext-link-type=\"uri\" xlink:href=\"https:\/\/youtu.be\/1U0GLdw6c70\">https:\/\/youtu.be\/1U0GLdw6c70<\/jats:ext-link>\n                  <\/jats:p>","DOI":"10.3171\/2020.4.focusvid.20193","type":"journal-article","created":{"date-parts":[[2020,7,1]],"date-time":"2020-07-01T08:02:51Z","timestamp":1593590571000},"page":"V6","source":"Crossref","is-referenced-by-count":0,"title":["C1 hypertrophic lateral mass resection and occiput\u2013C2 fusion"],"prefix":"10.3171","volume":"3","author":[{"given":"Rajiv R.","family":"Iyer","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Douglas L.","family":"Brockmeyer","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1754","reference":[{"issue":"4","key":"b1","series-title":"J Neurosurg Pediatr","doi-asserted-by":"publisher","first-page":"380","DOI":"10.3171\/2009.10.PEDS09296","article-title":"Equivalence of fusion rates after rigid internal fixation of the occiput to C-2 with or without C-1 instrumentation","volume":"5","author":"Hankinson TC","year":"2010","unstructured":"Hankinson TC, Avellino AM, Harter D,  Equivalence of fusion rates after rigid internal fixation of the occiput to C-2 with or without C-1 instrumentation. 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