Experimental tests and mechanical behaviour of human foot tendons [English translation]

This study aims to evaluate the mechanical properties of human foot tendons through mechanical tests. The assessment of the behaviour of the tendon tissue is relevant for the identification of the mechanical limits of these tissues. It can be a starting point for the study of materials and devices for repairs.
The analyzes were performed in vitro on samples of flexor and extensor tendons taken from 4 human feet, obtained from amputation at the Orthopedic Clinical of Padova (protocol code AOP2649). Uniaxial tensile and stress relaxation tests have been performed using the "Biomomentum" device. Experimental tests allowed us to obtain the force-displacement curve, stress-strain relationships and the equilibrium response of the tendons. Subsequently, the ultimate tensile strength, the failure strain and Young’s moduli have been calculated. The experimental data can be used within a constitutive model to interpret the mechanical response of tendons.