{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,30]],"date-time":"2025-10-30T07:14:18Z","timestamp":1761808458224,"version":"3.37.3"},"reference-count":18,"publisher":"Korean Neurosurgical Society","issue":"5","license":[{"start":{"date-parts":[[2021,7,28]],"date-time":"2021-07-28T00:00:00Z","timestamp":1627430400000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc\/3.0\/"}],"content-domain":{"domain":["jkns.or.kr"],"crossmark-restriction":true},"short-container-title":["J Korean Neurosurg Soc"],"published-print":{"date-parts":[[2021,9,1]]},"abstract":"<jats:p>An atlantoaxial subluxation from the unstable Os odontoideum by the failure of proper integrations between the embryological somites might be a commonly reported pathology. However, its suspicious origin or paralleled occurrence with other congenital anomalies of vertebral body might be a relatively rare phenomenon. The authors present two cases, who simply presented with clinical signs of prolonged, intractable cervicalgia without any neurological deficits, revealed this rare feature of C1\u20132 subluxation from the unstable, orthotropic type of Os odontoideum that coincide with congenitally fused cervical vertebral bodies between C2\u20133. Surprisingly, in one case, when traced from the lower cervical down to the thoracic-lumbar levels during the preoperative work-up process, was also compromised with multi-level butterfly vertebrae formations. Presented cases highlight the association of various congenital vertebrae anomalies and the rationale to fuse only affected joints.<\/jats:p>","DOI":"10.3340\/jkns.2020.0293","type":"journal-article","created":{"date-parts":[[2021,9,2]],"date-time":"2021-09-02T01:17:42Z","timestamp":1630545462000},"page":"837-842","update-policy":"https:\/\/doi.org\/10.3340\/crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["A Concomitant Occurrence of the Atlantoaxial Subluxation with Rare Vertebral Formation and Segmentation Defects"],"prefix":"10.3340","volume":"64","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-6670-7541","authenticated-orcid":true,"given":"Man Kyu","family":"Choi","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8447-2176","authenticated-orcid":true,"given":"Sung Bum","family":"Kim","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6246-8053","authenticated-orcid":true,"given":"Jun Ho","family":"Lee","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1892","reference":[{"key":"ref1","doi-asserted-by":"publisher","DOI":"10.1259\/0007-1285-31-369-503"},{"key":"ref2","first-page":"44","volume-title":"Butterfly vertebra or sagittal cleft vertebra","author":"Colquhoun","year":"1968"},{"key":"ref3","doi-asserted-by":"publisher","DOI":"10.4103\/jpn.jpn_154_16"},{"key":"ref4","first-page":"373","volume-title":"Congenital fusion of the cervical vertebrae","author":"Gray","year":"1964"},{"key":"ref5","doi-asserted-by":"publisher","DOI":"10.4103\/0971-3026.178358"},{"key":"ref6","doi-asserted-by":"publisher","DOI":"10.1177\/2192568218801016"},{"key":"ref7","first-page":"23","volume-title":"Occipitalization of the atlas","author":"McRae","year":"1953"},{"key":"ref8","first-page":"157","volume-title":"The early origin of vertebral anomalies, as illustrated by a \u2018butterfly vertebra\u2019","author":"M\u00fcller","year":"1986"},{"key":"ref9","doi-asserted-by":"publisher","DOI":"10.1007\/s00381-010-1358-9"},{"key":"ref10","doi-asserted-by":"publisher","DOI":"10.1016\/j.ajodo.2012.09.017"},{"key":"ref11","first-page":"E926","volume-title":"Butterfly vertebra: an uncommon congenital spinal anomaly","author":"Patinharayil","year":"2008"},{"key":"ref12","doi-asserted-by":"publisher","DOI":"10.1159\/000367664"},{"key":"ref13","doi-asserted-by":"publisher","DOI":"10.3171\/ped.2006.104.2.115"},{"key":"ref14","doi-asserted-by":"publisher","DOI":"10.3171\/2011.7.spine1152"},{"key":"ref15","doi-asserted-by":"publisher","DOI":"10.4103\/0028-3886.222853"},{"key":"ref16","first-page":"427","volume-title":"Congenital anomalies of the cervical spine","author":"Smoker","year":"1995"},{"key":"ref17","doi-asserted-by":"publisher","DOI":"10.1055\/s-0034-1376371"},{"key":"ref18","first-page":"75","volume-title":"Clinical significance of congenital fusion of cervical vertebrae: a report of 87 cases","author":"Yin","year":"1989"}],"container-title":["Journal of Korean Neurosurgical Society"],"original-title":[],"language":"en","link":[{"URL":"http:\/\/jkns.or.kr\/upload\/pdf\/jkns-2020-0293.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"http:\/\/jkns.or.kr\/journal\/view.php?doi=10.3340\/jkns.2020.0293","content-type":"unspecified","content-version":"vor","intended-application":"text-mining"},{"URL":"http:\/\/jkns.or.kr\/upload\/pdf\/jkns-2020-0293.pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2021,9,9]],"date-time":"2021-09-09T07:50:20Z","timestamp":1631173820000},"score":1,"resource":{"primary":{"URL":"http:\/\/jkns.or.kr\/journal\/view.php?doi=10.3340\/jkns.2020.0293"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2021,9,1]]},"references-count":18,"journal-issue":{"issue":"5","published-print":{"date-parts":[[2021,9]]}},"URL":"https:\/\/doi.org\/10.3340\/jkns.2020.0293","relation":{},"ISSN":["2005-3711","1598-7876"],"issn-type":[{"type":"print","value":"2005-3711"},{"type":"electronic","value":"1598-7876"}],"subject":[],"published":{"date-parts":[[2021,9,1]]},"assertion":[{"value":"2020-10-12","order":0,"name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"2021-01-27","order":1,"name":"accepted","label":"Accepted","group":{"name":"publication_history","label":"Publication History"}},{"value":"2021-07-28","order":2,"name":"published","label":"Published online","group":{"name":"publication_history","label":"Publication History"}},{"value":"2021-09-01","order":3,"name":"published","label":"Print publication","group":{"name":"publication_history","label":"Publication History"}}]}}