Structure, composition and fibril-reinforced poroviscoelastic properties of bovine knee ligaments and patellar tendon.

ABSTRACT: Tissue-level stress-relaxation of ligaments and tendons in the toe region is characterized by fast and long-term relaxations and an increase in relaxation magnitude with strain. Characterizing the compositional and structural origins of these phenomena helps in the understanding of mechanisms of ligament and tendon function and adaptation in health and disease. A three-step tensile stress-relaxation test was conducted on dumbbell-shaped pieces of bovine knee ligaments and patellar tendon (PT) (n = 10 knees). Their mechanical behaviour was characterized by a fibril-reinforced poroviscoelastic material model, able to describe characteristic times and magnitudes of fast and long-term relaxations. The crimp angle and length of tissues were measured with polarized light microscopy, while

SUBMITTER: Ristaniemi A 

PROVIDER: S-EPMC7879768 | biostudies-literature | 2021 Jan

REPOSITORIES: biostudies-literature