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Dragan F. Dimitrov, Peter R. Bronec, and Allan H. Friedman

We describe a patient who presented after minor trauma with a congenital lesion of the cervical spine that radiographically mimicked a unilaterally jumped locked facet. This 44-year-old Hispanic man presented with neck pain to the emergency room after a low-speed motor vehicle accident. He had no other neurological complaints. Physical examination demonstrated unremarkable results. Right oblique-view radiographs demonstrated an apparent unilateral C-7 jumped locked facet ( Fig. 1 ). Computerized tomography (CT) scanning ( Fig. 2 ) revealed that the superior

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Evaluation and treatment of congenital and developmental anomalies of the cervical spine

Invited submission from the Joint Section Meeting on Disorders of the Spine and Peripheral Nerves, March 2004

Arnold H. Menezes

Neurosurg 26: 214–218, 1997 3. Dimitrov DF , Bronec PR , Friedman AH : Congenitally absent C-7 pedicle presenting as a jumped locked facet. Case illustration. J Neurosurg (Spine 2) 99 : 239 , 2003 Dimitrov DF, Bronec PR, Friedman AH: Congenitally absent C-7 pedicle presenting as a jumped locked facet. Case illustration. J Neurosurg (Spine 2) 99: 239, 2003 4. Gehweiler JA Jr , Daffner RH , Roberts LJ Jr : Malformations of the atlas vertebra simulating the Jefferson fracture. Am J

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Richard D. Bucholz and K. Charles Cheung

and “0” indicating preserved alignment. The degree of facet injury was graded as “0” if there was no fracture or joint dislocation, “1” if there was a fracture of or a dislocation in the facet (“perched” facet), and “2” if the facet joint was jumped (“lockedfacet). The dependent variable (failure of therapy) was coded “0” if halo immobilization was successful and “1” if it failed and subsequent surgical fusion was necessary. The correlations of these variables with the dependent variable were assessed using Statistical Analysis System, version 5. 25 A