Document Detail

Surgical anatomy of the arteries of the posterior fossa.
MedLine Citation:
PMID:  3760965     Owner:  NLM     Status:  MEDLINE    
The development of revascularization for vertebrobasilar ischemic events has created a need to identify the best sites at which to perform bypass procedures. Since the occlusive process may selectively affect various levels of the vertebrobasilar tree, sites in different vessels must be used to reestablish flow distal to the area of occlusion. Twenty-seven unfixed human brains were obtained 4 to 8 hours post mortem, and the vertebrobasilar system was injected with polyester resin. Under a surgical microscope the outer diameter, length, and site of origin of major branches were recorded for the following arteries: vertebral, basilar, posterior inferior cerebellar (PICA), anterior inferior cerebellar (AICA), superior cerebellar (SCA), and posterior cerebral (PCA). The ideal sites for an anastomosis were identified as the pretonsillar segment of the PICA, the second portion of the AICA, the perimesencephalic segment of the SCA, and the perimesencephalic part of the PCA. Based on the anatomical observations reported here, these were the best sites because of their outer diameter, degree of mobility, least number of branches, and frequency of occurrence. Use of two of these arteries, however, may pose potential problems: although the PCA has an ideal outer diameter, it also has numerous branches to the brain stem in its most accessible site in the perimesencephalic area; and the PICA is not consistently present, being found in only 75% of the 27 specimens studied.
C Shrontz; M Dujovny; J I Ausman; F G Diaz; J E Pearce; S K Berman; E Hirsch; H G Mirchandani
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of neurosurgery     Volume:  65     ISSN:  0022-3085     ISO Abbreviation:  J. Neurosurg.     Publication Date:  1986 Oct 
Date Detail:
Created Date:  1986-11-03     Completed Date:  1986-11-03     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0253357     Medline TA:  J Neurosurg     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  540-4     Citation Subset:  AIM; IM    
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MeSH Terms
Basilar Artery / anatomy & histology
Cerebellum / blood supply
Cerebral Arteries / anatomy & histology
Cerebral Revascularization*
Cerebrovascular Circulation*
Cranial Fossa, Posterior
Vertebral Artery / anatomy & histology

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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