{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,27]],"date-time":"2026-01-27T15:22:40Z","timestamp":1769527360202,"version":"3.49.0"},"reference-count":26,"publisher":"Journal of Neurosurgery Publishing Group (JNSPG)","issue":"4","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["SPI"],"published-print":{"date-parts":[[2009,10]]},"abstract":"<jats:sec>\n<jats:title>Object<\/jats:title>\n<jats:p>Surgical management of unstable traumatic spondylolisthesis of the axis includes both posterior and anterior fusion methods. The authors performed a biomechanical study to evaluate the relative stability of anterior fixation at C2\u20133 and posterior fixation of C-1 through C-3 in hangman's fractures.<\/jats:p><\/jats:sec>\n<jats:sec>\n<jats:title>Methods<\/jats:title>\n<jats:p>Fresh-frozen cadaveric spine specimens (occipital level to T-2) were subjected to stepwise destabilization of the C1\u20132 complex, replicating a Type II hangman's fracture. Intact specimens, fractured specimens, and fractured specimens with either anterior screw and plate or posterior screw and rod fixation were each tested for stability. Each spine was subjected to separate right and left rotation, bending, flexion, and extension testing.<\/jats:p><\/jats:sec>\n<jats:sec>\n<jats:title>Results<\/jats:title>\n<jats:p>Anterior fixation restored stiffness in flexion and extension movements to values greater than those for intact specimens. For other movement parameters, the values approximated those for intact specimens. Posterior fixation increased the stiffness to above those values seen for anterior fixation specimens.<\/jats:p><\/jats:sec>\n<jats:sec>\n<jats:title>Conclusions<\/jats:title>\n<jats:p>In cadaveric spine specimens subjected to a Type II hangman's fracture, both anterior fixation at C2\u20133 and posterior fixation with C-1 lateral mass screws and C-2 and C-3 pedicle screws resulted in a consistent increase in stiffness, and hence in stability, over intact specimens.<\/jats:p><\/jats:sec>","DOI":"10.3171\/2009.4.spine08516","type":"journal-article","created":{"date-parts":[[2011,2,23]],"date-time":"2011-02-23T21:42:23Z","timestamp":1298497343000},"page":"379-387","source":"Crossref","is-referenced-by-count":28,"title":["Traumatic spondylolisthesis of the axis: a biomechanical comparison of clinically relevant anterior and posterior fusion techniques"],"prefix":"10.3171","volume":"11","author":[{"given":"Prashant","family":"Chittiboina","sequence":"first","affiliation":[{"name":"Departments of Neurosurgery and"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Esther","family":"Wylen","sequence":"additional","affiliation":[{"name":"Departments of Neurosurgery and"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Alan","family":"Ogden","sequence":"additional","affiliation":[{"name":"Orthopedics, Louisiana State University Health Sciences Center\u2013Shreveport, Louisiana"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Debi P.","family":"Mukherjee","sequence":"additional","affiliation":[{"name":"Orthopedics, Louisiana State University Health Sciences Center\u2013Shreveport, Louisiana"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Prasad","family":"Vannemreddy","sequence":"additional","affiliation":[{"name":"Departments of Neurosurgery and"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Anil","family":"Nanda","sequence":"additional","affiliation":[{"name":"Departments of Neurosurgery and"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1754","reference":[{"key":"b1-0110379","series-title":"Spine J","doi-asserted-by":"publisher","first-page":"166","DOI":"10.1016\/S1529-9430(01)00049-3","article-title":"Biomechanical comparison of anterior cervical plating and combined anterior\/lateral mass plating","volume":"1","author":"Adams","year":"2001"},{"issue":"3 Suppl","key":"b2-0110379","series-title":"Neurosurgery","doi-asserted-by":"publisher","first-page":"S125","DOI":"10.1097\/00006123-200203001-00021","article-title":"Isolated fractures of the axis in adults","volume":"50","author":"Anonymous","year":"2002"},{"key":"b3-0110379","series-title":"Clin Biomech (Bristol, Avon)","first-page":"432","article-title":"The traumatic spondylolisthesis of the axis. 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