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Is Congenital Bony Stenosis of the Cervical Spine Associated With Congenital Bony Stenosis of Thoracic Spine? An anatomic Study of 1072 Human Cadaveric Specimens.
MedLine Citation:
PMID:  22820282     Owner:  NLM     Status:  Publisher    
SUMMARY OF BACKGROUND DATA:: Tandem stenosis of cervical and lumbar spine is known to occur in 5% of individuals with symptomatic neural compression in one region. However the prevalence of concurrent cervical and thoracic stenosis is not known. Whether this relationship is due to an increased risk of degenerative disease in these individuals, or whether this finding is due to the tandem presence of a congenitally small cervical and thoracic canal is also unknown. OBJECTIVES:: To determine the prevalence of concurrent thoracic and cervical stenosis and if the presence of stenosis in the cervical spine is associated with stenosis in the thoracic spine. STUDY DESIGN:: A morphoanatomic study of cervical and thoracic cadaveric spines. METHODS:: 1072 adult skeletal specimens from the Hamann Todd Collection in the Cleveland Museum of Natural History were selected. Canal area at each level was also calculated using a geometric formula. A standard distribution for each level was created, and values that were 2SD below mean were considered as being congenitally stenotic. Linear regression analysis was used to determine the association between the additive canal areas at all levels in the cervical and thoracic spine and to determine the association between the number of stenotic levels in the cervical and thoracic spine. Logistic regression was used to calculate odds ratios for concurrent cervical and thoracic stenosis. RESULTS:: The prevalence of concurrent cervical and thoracic stenosis is 1%. A positive association was found between the additive areas of all cervical and thoracic levels (P<0.01). No association, however, was found between the number of stenotic thoracic and cervical levels (P=0.689). Log regression demonstrated no significant association (OR <1) between stenosis in the thoracic and cervical spine. CONCLUSIONS:: The area changes in cervical spine correlate with area variations in thoracic spine and the severity of stenosis in the thoracic spine increases as the levels of stenosis increase in the cervical spine. The presence of tandem cervical and thoracic stenosis does seem to be in part related to the tandem presence of a congenitally small cervical and thoracic canal.
Navkirat Singh Bajwa; Jason O Toy; Nicholas U Ahn
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-7-19
Journal Detail:
Title:  Journal of spinal disorders & techniques     Volume:  -     ISSN:  1539-2465     ISO Abbreviation:  -     Publication Date:  2012 Jul 
Date Detail:
Created Date:  2012-7-23     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101140323     Medline TA:  J Spinal Disord Tech     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
*Case Western Reserve University, University Hospitals, Garfield Heights, OH †Department of Orthopaedics & Rehabilitation, Yale School of Medicine ‡Department of Orthopaedics, Case Western Reserve University, University Hospitals.
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