During normal daily activities, ligaments experience a range of stresses. These stresses can be repetitive, sustained or a complex combination of the two . The stress-strain curve of ligaments is comprised of two parts: the toe region with increasing modulus, and the linear region which has constant modulus. Normal physiologic loading occurs between 5% and 10% of the ultimate tensile strength (UTS), and the transition from the toe region to the linear region occurs at approximately 15% of UTS . Ligaments healing from an injury have decreased failure properties compared to normal ligaments , which may correspondingly affect the ability of healing ligaments to function under physiologic loads. Modulus reduction was found to be a suitable marker of damage in normal ligaments . The purpose of this study was to investigate the effect of long-term fatigue and creep loading on modulus changes in healing medial collateral ligaments (MCLs).
- Bioengineering Division
Fatigue Loading Causes Earlier Modulus Reduction Than Creep Loading in Healing Rabbit Medial Collateral Ligaments
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Bailey, SJ, & Thornton, GM. "Fatigue Loading Causes Earlier Modulus Reduction Than Creep Loading in Healing Rabbit Medial Collateral Ligaments." Proceedings of the ASME 2008 Summer Bioengineering Conference. ASME 2008 Summer Bioengineering Conference, Parts A and B. Marco Island, Florida, USA. June 25–29, 2008. pp. 541-542. ASME. https://doi.org/10.1115/SBC2008-192958
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