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Updated: Jun 21, 2026
07:07
Biomechanical Characterization of Human Soft Tissues Using Indentation and Tensile Testing
Published on: December 13, 2016
Investigating load relaxation mechanics in tendon
1Medical Engineering Division and IRC in Biomedical Materials, School of Engineering and Materials Science, Queen Mary University of London, E1 4NS London, UK. H.R.C.Screen@qmul.ac.uk
Summary
This study reveals that tendon fascicle viscoelasticity is primarily driven by fiber sliding mechanisms. Proteoglycans play a key role in controlling this behavior and strain transfer within tendons.
Area of Science:
- Biomechanics
- Materials Science
- Tendon Physiology
Background:
- Tendons are crucial for force transmission, possessing high tensile strength and complex viscoelastic properties.
- While tendon viscoelasticity is recognized, the structural mechanisms underlying this behavior remain unclear.
- Understanding these mechanisms is vital for comprehending tendon function and injury.
Purpose of the Study:
- To investigate the mechanisms of viscoelasticity within isolated tendon fascicles.
- To determine the role of the tendon matrix in load dissipation during stress relaxation.
- To elucidate the structural basis of tendon's viscoelastic characteristics.
Main Methods:
- Mechanical testing, including incremental and direct load relaxation tests on isolated tendon fascicles.
- Confocal microscopy to assess the structural responses of the tendon fascicles under load.
- Analysis of load dissipation by the tendon matrix during relaxation.
Main Results:
- Tendon fascicles exhibit significant viscoelastic behavior, confirmed by stress relaxation tests.
- Fiber sliding mechanisms were identified as the dominant factor in relaxation behavior within fascicles.
- The tendon matrix actively contributes to load dissipation during the relaxation phase.
Conclusions:
- Tendon viscoelasticity is largely governed by the sliding of collagen fibers within the fascicle.
- Proteoglycans are functionally important in regulating tendon viscoelasticity and strain transfer.
- These findings enhance our understanding of the mechanical properties and functional roles of tendon components.
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