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An anisotropic microsphere-based approach for fiber orientation adaptation in soft tissue

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10.1109/TBME.2011.2166154
 
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hdl:2117/103709

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Sáez Viñas, PabloMés informacióMés informacióMés informació
Pena, Estefanía
Doblaré, Manuel
Martínez, Miguel Ángel
Document typeArticle
Defense date2011
Rights accessOpen Access
All rights reserved. This work is protected by the corresponding intellectual and industrial property rights. Without prejudice to any existing legal exemptions, reproduction, distribution, public communication or transformation of this work are prohibited without permission of the copyright holder
Abstract
Evolutionary processes in biological tissue, such as adaptation or remodeling, represent an enterprising area of research. In this paper, we present a multiscale model for the remodeling of fibered structures, such as bundles of collagen fibrils. With this aim, we introduce a von Mises statistical distribution function to account for the directional dispersion of the fibrils, and we remodel the underlying fibrils by changing their orientation. To numerically compute this process, we make use of the microsphere approach, which provides a useful multiscale tool for homogenizing the microstructure behavior, related to the fibrils of the bundle, in the macroscale of the problem. The results show how the fibrils respond to the stimulus by reorientation of their structure. This process leads to a stiffer material eventually reaching a stationary state. These results are in agreement with those reported in the literature, and they characterize the adaptation of biological tissue to external stimuli.
CitationSaez, P., Pena, E., Doblaré, M., Martínez, M.A. An anisotropic microsphere-based approach for fiber orientation adaptation in soft tissue. "IEEE transactions on biomedical engineering", 2011, vol. 58, núm. 12, p. 3500-3503. 
URIhttp://hdl.handle.net/2117/103709
DOI10.1109/TBME.2011.2166154
ISSN0018-9294
Publisher versionhttp://ieeexplore.ieee.org/document/5999710/
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