Noncontact dynamic analysis of mechanical behavior of tendons by optical techniques

Gian Marco Revel; Alessandro Scalise; Lorenzo Scalise

doi:10.1117/12.427895

23 May 2001 Noncontact dynamic analysis of mechanical behavior of tendons by optical techniques

Gian Marco Revel, Alessandro Scalise, Lorenzo Scalise

Proceedings Volume 4251, Coherence Domain Optical Methods in Biomedical Science and Clinical Applications V; (2001) https://doi.org/10.1117/12.427895
Event: BiOS 2001 The International Symposium on Biomedical Optics, 2001, San Jose, CA, United States

Abstract

Over the past three decades extensive studies have been performed on the structural and mechanical properties of Achilles tendon trying to explain its mechanical proprieties and trying to realize more precise mathematical model trough constitutive equations. Among the various mechanical parameters, deformation-load and stress-strain curves give first mechanical parameters of interest, but also the vibrational behavior of tendon may be of interest, in particular for in-vivo applications. The present paper describes how in vitro tensile experiments can be performed, taking also into account the need to simulate physiological condition of Achilles tendon, approaching thus some opened problems in the design of the experimental set-up. A new system for measuring tendon vibrations by non-contact techniques under specific deformation-load conditions is presented. In the first step preliminary simple elongation tests are made in order to characterize the tissue extracting the mainly mechanical parameters: load-deformation and stress-strain curves. Then, an experimental vibration study is made at each tension level evaluating the free oscillations caused by a small hammer. Modification of first resonance frequency as function of load or strain is reported. The underlying idea is to establish a measurement procedure to perform the mechanical characterization of tendons by extracting parameters, as the resonance frequency, achievable also during in-vivo investigation.

Citation Download Citation

Gian Marco Revel, Alessandro Scalise, and Lorenzo Scalise "Noncontact dynamic analysis of mechanical behavior of tendons by optical techniques", Proc. SPIE 4251, Coherence Domain Optical Methods in Biomedical Science and Clinical Applications V, (23 May 2001); https://doi.org/10.1117/12.427895

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