{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,19]],"date-time":"2026-06-19T01:06:15Z","timestamp":1781831175438,"version":"3.54.5"},"reference-count":6,"publisher":"Scientific Scholar","content-domain":{"domain":["surgicalneurologyint.com"],"crossmark-restriction":true},"short-container-title":[],"abstract":"\nBackground: <\/jats:title>\nType II C2 odontoid fractures are common traumatic cervical spine lesions and have the highest risk of non-union without fusion. Pseudoarthrosis may lead to extreme anatomic deformation, and poor clinical outcomes. A 50-year-old male, following a traumatic C2 dens fracture treated when the patient was 44 years of age, newly presented at age 50 with pseudoarthrosis and severe C1-C2 subluxation that required a secondary fusion using a three-dimensional (3D) printed model for appropriate surgical planning.<\/jats:p>\n<\/jats:sec>\n\nCase Description: <\/jats:title>\nA 44-year-old male underwent a C1 posterior arch osteotomy to treat cervical myelopathy after a type 2 odontoid fracture. Now at age 50, he newly presented with recurrent myelopathy, and marked cord compression due to a C2 odontoid-dens pseudoarthrosis, and extreme C1 subluxation over C2. A 3D model of the patients\u2019 cervical-spine anatomy was created for surgical planning and led to an anterior C1-C2 freeing of the pseudoarthrosis, followed by a posterior C0-C1 decompression, deformity reduction, C0, C2 laminar, and C3\/4 trans-articular arthrodesis. Six months postoperatively, the patient improved from a pre-operative mJOA score of 5 to a postoperative mJOA score of 14.<\/jats:p>\n<\/jats:sec>\n\nConclusion: <\/jats:title>\nA 3D model was successfully utilized to plan a secondary 360\u00b0 fusion for a pseudoarthrosis diagnosed 6 years after an original C-C2type II odontoid fusion in a now 50-year-old male.<\/jats:p>\n<\/jats:sec>","DOI":"10.25259\/sni_10_2022","type":"journal-article","created":{"date-parts":[[2022,4,8]],"date-time":"2022-04-08T07:30:04Z","timestamp":1649403004000},"page":"137","update-policy":"https:\/\/doi.org\/10.25259\/crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Case report: Challenging post-traumatic pseudoarthrosis of C2 odontoid fracture and extreme C1-C2 subluxation"],"prefix":"10.25259","volume":"13","author":[{"given":"Pedro Gon\u00e7alo","family":"Abreu","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Clara","family":"Romero","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jose Artur Bastos","family":"Louren\u00e7o","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lia","family":"Pappamikail","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Miguel","family":"Brito","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Pedro","family":"Teles","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Joaquim","family":"Correia","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"10894","published-online":{"date-parts":[[2022,4,8]]},"reference":[{"key":"10.25259\/SNI_10_2022\/ref-1","first-page":"410","article-title":"Treatment of displaced Type II odontoid fractures in elderly patients","volume":"38","author":"Elgafy","year":"2009","journal-title":"Am J Orthop (Belle Mead NJ)"},{"key":"10.25259\/SNI_10_2022\/ref-2","first-page":"353","article-title":"The use of 3D planning in facial surgery: Preliminary observations","volume":"115","author":"Hoarau","year":"2014","journal-title":"Rev Stomatol Chir Maxillofac Chir Orale"},{"key":"10.25259\/SNI_10_2022\/ref-3","doi-asserted-by":"crossref","first-page":"E11","DOI":"10.3171\/2015.1.FOCUS14781","article-title":"Surgical treatment of Type II odontoid fractures: Anterior odontoid screw fixation or posterior cervical instrumented fusion?","volume":"38","author":"Joaquim","year":"2015","journal-title":"Neurosurg Focus"},{"key":"10.25259\/SNI_10_2022\/ref-4","doi-asserted-by":"crossref","first-page":"S53","DOI":"10.1097\/01.brs.0000217941.55817.52","article-title":"The contemporary treatment of odontoid injuries","volume":"31","author":"Maak","year":"2006","journal-title":"Spine (Phila Pa 1976)"},{"key":"10.25259\/SNI_10_2022\/ref-5","doi-asserted-by":"crossref","first-page":"225","DOI":"10.1016\/j.jocn.2013.04.011","article-title":"New generation intraoperative three-dimensional imaging (O-arm) in 100 spine surgeries: Does it change the surgical procedure?","volume":"21","author":"Sembrano","year":"2014","journal-title":"J Clin Neurosci"},{"key":"10.25259\/SNI_10_2022\/ref-6","doi-asserted-by":"crossref","first-page":"839","DOI":"10.1016\/j.otsr.2015.08.011","article-title":"Conservative versus surgical treatment for Type II odontoid fractures in the elderly: Grading the evidence through a meta-analysis","volume":"101","author":"Yang","year":"2015","journal-title":"Orthop Traumatol Surg Res"}],"container-title":["Surgical Neurology International"],"original-title":[],"language":"en","link":[{"URL":"http:\/\/surgicalneurologyint.com\/case-report-challenging-post-traumatic-pseudoarthrosis-of-c2-odontoid-fracture-and-extreme-c1-c2-subluxation\/","content-type":"text\/html","content-version":"vor","intended-application":"text-mining"},{"URL":"http:\/\/surgicalneurologyint.com\/surgicalint-articles\/case-report-challenging-post-traumatic-pseudoarthrosis-of-c2-odontoid-fracture-and-extreme-c1-c2-subluxation\/","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2022,4,8]],"date-time":"2022-04-08T07:30:10Z","timestamp":1649403010000},"score":1,"resource":{"primary":{"URL":"http:\/\/surgicalneurologyint.com\/surgicalint-articles\/case-report-challenging-post-traumatic-pseudoarthrosis-of-c2-odontoid-fracture-and-extreme-c1-c2-subluxation\/"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2022,4,8]]},"references-count":6,"alternative-id":["10.25259\/SNI_10_2022"],"URL":"https:\/\/doi.org\/10.25259\/sni_10_2022","relation":{},"ISSN":["2152-7806"],"issn-type":[{"value":"2152-7806","type":"electronic"}],"subject":[],"published":{"date-parts":[[2022,4,8]]},"article-number":"137"}}