Document Detail

Os odontoideum. A case report of one identical twin.
MedLine Citation:
PMID:  9089945     Owner:  NLM     Status:  MEDLINE    
STUDY DESIGN: This case report identifies one identical twin with an os odontoideum after trauma and the other twin with a normal cervical spine and no history of trauma. OBJECTIVES: To highlight the etiology of os odontoideum as posttraumatic as opposed to congenital in nature. SUMMARY OF BACKGROUND: The etiology of os odontoideum has been debated since its original description by Giacomini in 1886. Although proponents of the congenital origin are supported by association with various congenital anomalies, including Down's syndrome, Klippel-Feil syndrome, and multiple epiphyseal dysplasia, the majority of reports suggest a posttraumatic etiology. METHODS: We reviewed the cervical radiographs of an identical twin with transient paresis and significant trauma to her neck as a child after a motor vehicle accident. The radiographs were compared with those of her twin sister, who had no history of trauma. RESULTS: Os odontoideum was identified in one identical twin with a history of trauma. She was treated with a posterior C1-C2 arthrodesis using the Magerel transarticular screw technique supplemented by a modified Gallie's wiring. At a 12-month follow-up, she was asymptomatic and had a solid fusion based on flexion and extension views. CONCLUSIONS: This case report of an os odontoideum occurring in one identical twin after a traumatic injury supports the possibility of a posttraumatic, as opposed to congenital, theory of origin.
J M Verska; P A Anderson
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Publication Detail:
Type:  Case Reports; Journal Article    
Journal Detail:
Title:  Spine     Volume:  22     ISSN:  0362-2436     ISO Abbreviation:  Spine     Publication Date:  1997 Mar 
Date Detail:
Created Date:  1997-06-09     Completed Date:  1997-06-09     Revised Date:  2009-07-09    
Medline Journal Info:
Nlm Unique ID:  7610646     Medline TA:  Spine (Phila Pa 1976)     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  706-9     Citation Subset:  IM    
Department of Orthopaedic Surgery, University of Washington, Seattle, USA.
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MeSH Terms
Atlanto-Axial Joint / radiography*,  surgery
Bone Screws
Bone Wires
Neck / radiography
Neck Injuries*
Twins, Monozygotic*

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