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Consequences of Long-Term Cyclic Indentation on Initially Intact Cartilage

[+] Author Affiliations
Bruce Y. C. Wu, Martha L. Gray, Simona Socrate

MIT, Cambridge, MA

Paper No. SBC2007-176600, pp. 939-940; 2 pages
doi:10.1115/SBC2007-176600
From:
  • ASME 2007 Summer Bioengineering Conference
  • ASME 2007 Summer Bioengineering Conference
  • Keystone, Colorado, USA, June 20–24, 2007
  • Conference Sponsors: Bioengineering Division
  • ISBN: 0-7918-4798-5
  • Copyright © 2007 by ASME

abstract

It has long been suggested that articular cartilage is susceptible to damage by repetitive mechanical loading (1–4); however, the exact mechanisms via which the damage is induced is not yet well-understood. As a step towards deeper understanding of damage, this work sought to address two main goals: (i) to investigate the consequences of subjecting initially intact cartilage to repeated long-term small-amplitude indentation loading that does not induce any observable damage over a short term; and (ii) to establish a 1-D nonlinear rheological model to capture the indentation response of the tissue in its “undamaged” and “damaged” states. Our objective is to use a simple model to provide a framework to interpret the changes in the macroscopic mechanical response in terms of alterations in its constituents properties.

Copyright © 2007 by ASME
Topics: Cartilage

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