Mineralized tissue of shark vertebral centra studied with microCT under in situ load

Stuart R. Stock; Jason T. Parker; Michelle S. Passerotti; Lisa J. Natanson; Dilworth Y. Parkinson

doi:10.1117/12.3027632

17 October 2024 Mineralized tissue of shark vertebral centra studied with microCT under in situ load

Stuart R. Stock, Jason T. Parker, Michelle S. Passerotti, Lisa J. Natanson, Dilworth Y. Parkinson

Proceedings Volume 13152, Developments in X-Ray Tomography XV; 131520S (2024) https://doi.org/10.1117/12.3027632
Event: Optical Engineering + Applications, 2024, San Diego, California, United States

Abstract

Shark vertebral bodies (centra) possess remarkable resistance to millions of cycles of large in vivo strains exceeding 4 to 8%. These strains are enormous for a mineralized tissue, and it appears that the centra evolved to achieve this performance through a hierarchy of structures spanning dimensions from centimeters to nanometers. At the 1μm scale, blocks cut from centra and imaged with synchrotron microCT demonstrate that the centra tissue consists of closely spaced, mineralized trabeculae. An outstanding question is: How do these trabeculae deform to accommodate these large strains. This paper presents recently obtained synchrotron microCT results on in situ loading of blocks of shark centra and examines the deformation modes of the interconnected array of trabeculae.

Conference Presentation

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Stuart R. Stock, Jason T. Parker, Michelle S. Passerotti, Lisa J. Natanson, and Dilworth Y. Parkinson "Mineralized tissue of shark vertebral centra studied with microCT under in situ load", Proc. SPIE 13152, Developments in X-Ray Tomography XV, 131520S (17 October 2024); https://doi.org/10.1117/12.3027632

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