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Congenital os odontoideum arising from the secondary ossification center without prior fracture.
MedLine Citation:
PMID:  23039156     Owner:  NLM     Status:  Publisher    
The etiology of os odontoideum has been debated in the literature since the condition was initially described. The authors present the case of a 4-year-old girl who was found to have an os odontoideum with atlantoaxial instability after a motor vehicle collision. Imaging performed 3 years earlier demonstrated an incompletely ossified, cartilaginous, orthotopic os separated from the body of the odontoid process at the level of the secondary ossification center with a short odontoid process. This case presents the earliest imaging demonstration of the presence of a congenital orthotopic os odontoideum at the secondary ossification center. The authors review the pertinent literature and propose that the etiology of os odontoideum is multifactorial and related to the embryology and vascular supply to the odontoid process.
Brian J McHugh; Ryan A Grant; Alyssa B Zupon; Michael L Diluna
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-10-5
Journal Detail:
Title:  Journal of neurosurgery. Spine     Volume:  -     ISSN:  1547-5646     ISO Abbreviation:  J Neurosurg Spine     Publication Date:  2012 Oct 
Date Detail:
Created Date:  2012-10-8     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101223545     Medline TA:  J Neurosurg Spine     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Department of Neurosurgery, Section of Pediatric Neurosurgery, Yale Spine Institute, Yale University School of Medicine, New Haven, Connecticut.
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