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Characterization of Stapes Anatomy: Investigation of Human and Guinea Pig

Sim, Jae ; Röösli, Christof ; Chatzimichalis, Michail ; Eiber, Albrecht ; Huber, Alexander

In: Journal of the Association for Research in Otolaryngology, 2013, vol. 14, no. 2, p. 159-173

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    Titre
    • Characterization of Stapes Anatomy: Investigation of Human and Guinea Pig
    Auteur
    • Sim, Jae. Department of Otorhinolaryngology, Head and Neck Surgery, University Hospital Zurich, Frauenkliniksrasse 24, 8091, Zurich, Switzerland
    • Röösli, Christof. Department of Otorhinolaryngology, Head and Neck Surgery, University Hospital Zurich, Frauenkliniksrasse 24, 8091, Zurich, Switzerland
    • Chatzimichalis, Michail. Department of Otorhinolaryngology, Head and Neck Surgery, University Hospital Zurich, Frauenkliniksrasse 24, 8091, Zurich, Switzerland
    • Eiber, Albrecht. University of Stuttgart, Stuttgart, Germany
    • Huber, Alexander. Department of Otorhinolaryngology, Head and Neck Surgery, University Hospital Zurich, Frauenkliniksrasse 24, 8091, Zurich, Switzerland
    Type de document
    • Postprint
    Langue
    • Inglese
    Publié dans
    • Journal of the Association for Research in Otolaryngology, 2013, vol. 14, no. 2, p. 159-173. Springer-Verlag
    Autre version électronique
    Identifiant OAI-PMH
    • oai:doc.rero.ch:317881
    Summary
    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