Document Detail

Prevalence of the foramen arcuale of the atlas in a Saudi population.
MedLine Citation:
PMID:  23022899     Owner:  NLM     Status:  In-Data-Review    
OBJECTIVE: To describe the prevalence and morphologic characteristics of the foramen arcuale of the atlas vertebra in the Saudi population and propose a simplified classification system.
METHODS: A cross-sectional hospital-based study was conducted at King Abdulaziz University Hospital, Jeddah, Kingdom of Saudi Arabia from September 2010 to February 2011. During the 6-month period, 453 CT studies of the cervical spine were evaluated for the presence of different degrees of this anatomic variant using a clinically relevant classification system.
RESULTS: We found 52.1% (236 patients) to have no degree of osseous bridging, 31.8% (144 patients) had some degree of incomplete posterior osseous bridging, and 16.1% had the complete form of the foramen arcuale. The anomaly showed a male predilection that only reached statistic significance for those on the left side (p=0.016). Patients with a well-developed variant were older than those without the anomaly, but only by 7.46 years (p=0.034). These anomalies showed a propensity for bilaterality, which is a source for concern (kappa=0.592, approximate significance=0.00).
CONCLUSION: Compared to data from other countries, this anomaly has a higher prevalence in our population, indicating that further investigations are needed.
Saleh S Baeesa; Rakan F Bokhari; Khalid M Bajunaid; Mohammad J Al-Sayyad
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Neurosciences (Riyadh, Saudi Arabia)     Volume:  17     ISSN:  1319-6138     ISO Abbreviation:  Neurosciences (Riyadh)     Publication Date:  2012 Oct 
Date Detail:
Created Date:  2012-10-01     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101252453     Medline TA:  Neurosciences (Riyadh)     Country:  Saudi Arabia    
Other Details:
Languages:  eng     Pagination:  345-51     Citation Subset:  IM    
Division of Neurosurgery, Faculty of Medicine, King Abdulaziz University, PO Box 80215, Jeddah 21589, Kingdom of Saudi Arabia. Tel. +966 (2) 6408346. Fax. +966 (2) 6408469. E-mail:
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