Document Detail

Characterization of stapes anatomy: investigation of human and guinea pig.
MedLine Citation:
PMID:  23299488     Owner:  NLM     Status:  MEDLINE    
The accuracy of any stapes model relies on the accuracy of the anatomical information upon which it is based. In many previous models and measurements of the stapes, the shape of the stapes has been considered as symmetric with respect to the long and short axes of the footplate. Therefore, the reference frame has been built based upon this assumption. This study aimed to provide detailed anatomical information on the dimensions of the stapes, including its asymmetries. High-resolution microcomputed tomography data from 53 human stapes and 11 guinea pig stapes were collected, and their anatomical features were analyzed. Global dimensions of the stapes, such as the size of the footplate, height, and volume, were compared between human and guinea pig specimens, and asymmetric features of the stapes were quantitatively examined. Further, dependence of the stapes dimensions on demographic characteristics of the subjects was explored. The height of the stapes relative to the footplate size in the human stapes was found to be larger than the corresponding value in guinea pig. The stapes showed asymmetry of the footplate with respect to the long axis and offset of the stapes head from the centroid of the medial surface of the footplate for both humans and guinea pigs. The medial surface of the footplate was curved, and the longitudinal arches of the medial surface along the long axis of the footplate were shaped differently between humans and guinea pigs. The dimension of the footplate was gender-dependent, with the size greater in men than in women.
Jae Hoon Sim; Christof Röösli; Michail Chatzimichalis; Albrecht Eiber; Alexander M Huber
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't     Date:  2013-01-09
Journal Detail:
Title:  Journal of the Association for Research in Otolaryngology : JARO     Volume:  14     ISSN:  1438-7573     ISO Abbreviation:  J. Assoc. Res. Otolaryngol.     Publication Date:  2013 Apr 
Date Detail:
Created Date:  2013-03-12     Completed Date:  2013-09-06     Revised Date:  2014-04-01    
Medline Journal Info:
Nlm Unique ID:  100892857     Medline TA:  J Assoc Res Otolaryngol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  159-73     Citation Subset:  IM    
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MeSH Terms
Anthropometry / methods
Guinea Pigs / anatomy & histology*
Middle Aged
Models, Anatomic*
Reproducibility of Results
Sex Characteristics
Stapes / anatomy & histology*,  radiography
Tomography, X-Ray Computed

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

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