{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,26]],"date-time":"2026-08-26T14:43:23Z","timestamp":1787755403006,"version":"build-2784847793"},"reference-count":12,"publisher":"Ovid Technologies (Wolters Kluwer Health)","issue":"4","content-domain":{"domain":["lww.com","ovid.com"],"crossmark-restriction":true},"short-container-title":[],"abstract":"<jats:sec>\n                    <jats:title>Case:<\/jats:title>\n                    <jats:p>Two patients with delayed presentations of neck pain and fixed kyphotic deformity after trauma were found to have atlantoaxial spondyloptosis (AAS) with type II dens fractures. Owing to the rarity of AAS, outcomes and optimal treatment are not well understood. In both cases, closed reduction was achieved with a dynamic overhead traction setup, followed by posterior surgical stabilization with C1-2 screw fixation.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion:<\/jats:title>\n                    <jats:p>Closed reduction remains a challenge because of the marked deformity of interlocking C1-C2 joints. However, patients with chronic fixed atlantoaxial dislocation due to odontoid fractures can be safely managed with closed reduction and fusion of C1-C2.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Level of Evidence:<\/jats:title>\n                    <jats:p>Level V.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.2106\/jbjs.cc.22.00230","type":"journal-article","created":{"date-parts":[[2022,10,7]],"date-time":"2022-10-07T14:08:08Z","timestamp":1665151688000},"update-policy":"https:\/\/doi.org\/10.1097\/lww.0000000000001000","source":"Crossref","is-referenced-by-count":3,"title":["Atlantoaxial Spondyloptosis with Type II Odontoid Fractures"],"prefix":"10.2106","volume":"12","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-2666-8327","authenticated-orcid":false,"given":"Andrew D.","family":"Lachance","sequence":"first","affiliation":[{"name":"Tufts University School of Medicine, Boston, Massachusetts"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8100-0517","authenticated-orcid":false,"given":"Jakob V. E.","family":"Gerstl","sequence":"additional","affiliation":[{"name":"Neuroscience Institute, Maine Medical Center, Portland, Maine"},{"name":"Computational Neuroscience Outcomes Center, Department of Neurosurgery, Brigham and Women\u2019s Hospital, Boston, Massachusetts"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2093-2887","authenticated-orcid":false,"given":"Jeffrey E.","family":"Florman","sequence":"additional","affiliation":[{"name":"Neuroscience Institute, Maine Medical Center, Portland, Maine"},{"name":"Department of Neurosurgery, Tufts University Medical Center, Boston, Massachusetts"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"276","published-online":{"date-parts":[[2022,10]]},"reference":[{"issue":"4","key":"bib1-20240805","doi-asserted-by":"crossref","first-page":"209","DOI":"10.1080\/02688690600852274","article-title":"One stage reduction and fixation for atlantoaxial spondyloptosis: report of four cases","volume":"20","author":"Goel","year":"2006","journal-title":"Br J Neurosurg."},{"issue":"1","key":"bib2-20240805","doi-asserted-by":"crossref","first-page":"3","DOI":"10.3171\/2010.9.SPINE1010","article-title":"Atlantoaxial facet locking: treatment by facet manipulation and fixation. Experience in 14 cases","volume":"14","author":"Goel","year":"2011","journal-title":"J Neurosurg Spine."},{"issue":"4","key":"bib3-20240805","first-page":"80","article-title":"Neglected posttraumatic atlantoaxial spondyloptosis with type 2 odontoid fracture: a case report","volume":"9","author":"Ahuja","year":"2019","journal-title":"J Orthop Case Rep."},{"issue":"4","key":"bib4-20240805","doi-asserted-by":"crossref","first-page":"513","DOI":"10.3109\/02688697.2015.1019421","article-title":"Factors influencing feasibility of direct posterior reduction in irreducible traumatic atlantoaxial dislocation secondary to isolated odontoid fracture","volume":"29","author":"Salunke","year":"2015","journal-title":"Br J Neurosurg."},{"key":"bib5-20240805","doi-asserted-by":"crossref","first-page":"609","DOI":"10.1016\/j.wneu.2017.09.097","article-title":"Traumatic atlantoaxial spondyloptosis associated with displaced odontoid fracture: complete reduction via posterior approach using \u201cjoint remodeling\u201d technique","volume":"110","author":"Kumar","year":"2018","journal-title":"World Neurosurg."},{"issue":"5","key":"bib6-20240805","doi-asserted-by":"crossref","first-page":"587","DOI":"10.1097\/00007632-199105000-00021","article-title":"Traumatic atlantoaxial dislocation without fracture of the odontoid","volume":"16","author":"Wong","year":"1991","journal-title":"Spine."},{"issue":"3","key":"bib7-20240805","doi-asserted-by":"crossref","first-page":"405","DOI":"10.1111\/os.12255","article-title":"Atlantoaxial joint interlocking following type II odontoid fracture associated with posterolateral atlantoaxial dislocation: a case report and review of published reports","volume":"8","author":"He","year":"2016","journal-title":"Orthop Surg."},{"key":"bib8-20240805","first-page":"717","article-title":"Vertebral artery injury in cervical spine surgery","volume":"58","author":"Devin","year":"2009","journal-title":"Instructional Course Lectures."},{"issue":"1","key":"bib9-20240805","doi-asserted-by":"crossref","first-page":"187","DOI":"10.1007\/s00381-018-3948-x","article-title":"Vertebral artery dissection caused by atlantoaxial dislocation: a case report and review of literature","volume":"35","author":"Hu","year":"2019","journal-title":"Child's nervous Syst."},{"issue":"6","key":"bib10-20240805","doi-asserted-by":"crossref","first-page":"1689","DOI":"10.1148\/rg.286085521","article-title":"Blunt cerebrovascular injuries: imaging with multidetector CT angiography","volume":"28","author":"Sliker","year":"2008","journal-title":"Radiographics."},{"issue":"10","key":"bib11-20240805","doi-asserted-by":"crossref","first-page":"876","DOI":"10.1111\/j.1755-5949.2012.00376.x","article-title":"Diagnosis and treatment of vertebral artery dissection caused by atlantoaxial dislocation","volume":"18","author":"Chen","year":"2012","journal-title":"CNS Neurosci Ther."},{"issue":"12","key":"bib12-20240805","doi-asserted-by":"crossref","first-page":"E520","DOI":"10.1097\/BRS.0b013e3181cd98b6","article-title":"Correlation of C2 fractures and vertebral artery injury","volume":"35","author":"Ding","year":"2010","journal-title":"Spine."}],"container-title":["JBJS Case Connector"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.ovid.com\/10.2106\/JBJS.CC.22.00230","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,8,26]],"date-time":"2026-08-26T13:42:21Z","timestamp":1787751741000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.ovid.com\/10.2106\/JBJS.CC.22.00230"}},"subtitle":["A Report of 2 Cases"],"short-title":[],"issued":{"date-parts":[[2022,10]]},"references-count":12,"journal-issue":{"issue":"4","published-online":{"date-parts":[[2022]]}},"URL":"https:\/\/doi.org\/10.2106\/jbjs.cc.22.00230","relation":{},"ISSN":["2160-3251"],"issn-type":[{"value":"2160-3251","type":"electronic"}],"subject":[],"published":{"date-parts":[[2022,10]]},"assertion":[{"value":"2022-03-29","name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"2022-08-10","name":"accepted","label":"Accepted","group":{"name":"publication_history","label":"Publication History"}}]}}