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Tensile Testing of Ligaments In a significant number of automobile
crashes involving pedestrians, the knee ligament which controls
the stability of the knee often get severely loaded. In lateral
impact on knee during automotive crashes, varus-valgus deformities
result in failure of ligament by avulsion or rupture. Varus-valgus
deformity strains occur mainly in the middle region of ligament
and it is known that properties vary in the different regions of
the ligament. Experimental measurement of tensile-load elongation
behavior of bovine middle region medial collateral ligament
properties between strain rate 0.0001/s to 161/s are reported
here. The results shows a linear stress-strain response at lower
strain rate whereas it is nonlinear and strain rate sensitive in
dynamic loading conditions. The objective of this study is to
establish a methodology to identify the quasi-static and dynamic
properties of ligaments.
Quasi-static tensile test set-up
(Warhatkar H N et al., 2009)
Dynamic tensile test set-up
(Warhatkar H N et al., 2009)
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