Data/hora: 07/06/2024 08:37:30

Provedor de dados: | 42
País: | Brazil
Título: | Biaxial testing of canine annulus fibrosus tissue under changing salt concentrations
Autores: | Huyghe,Jacques M.
Data: | 2010-03-01
Ano: | 2010
Palavras-chave: | Swelling; Collagen; Osmosis; Donnan; Cartilaginous.
Resumo: | The in vivo mechanics of the annulus fibrosus of the intervertebral disc is one of biaxial rather than uniaxial loading. The material properties of the annulus are intimately linked to the osmolarity in the tissue. This paper presents biaxial relaxation experiments of canine annulus fibrosus tissue under stepwise changes of external salt concentration. The force tracings show that stresses are strongly dependent on time, salt concentration and orientation. The force tracing signature of are sponse to a change instrain, is one of a jumpin stress that relaxes partly as the new strain is maintained. The force tracing signature of a stepwise change in salt concentration is a progressive monotonous change in stress towards a new equilibrium value. Although the number of samples does not allow any definitive quantitative conclusions, the trends may shed light on the complex interaction among the directionality of forces, strains and fiber orientation on one hand, and on the other hand, the osmolarity of the tissue. The dual response to a change in strain is understood as an immediate response before fluid flows in or out of the tissue, followed by a progressive readjustment of the fluid content in time because of the gradient in fluid chemical potential between the tissue and the surrounding solution.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652010000100012
Editor: | Academia Brasileira de Ciências
Relação: | 10.1590/S0001-37652010000100012
Formato: | text/html
Fonte: | Anais da Academia Brasileira de Ciências  v.82 n.1 2010
Fonte: | info:eu-repo/semantics/openAccess