Prediction of nonlinear elastic behaviour of vaginal tissue: experimental results and model formulation

• Tipo: Artigo em Revista Científica Internacional
• Data: 2010

Autores

Martins, P (Autor) Outra; Pena, E (Autor) Outra; Calvo, B (Autor) Outra; Doblare, M (Autor) Outra; Mascarenhas, T (Autor) FMUP; Natal M N Jorge (Autor) FEUP; Ferreira, A (Autor) FEUP

Revista

Título: Computer Methods in Biomechanics and Biomedical Engineering

Vol. 13 Nº 2

Páginas: 327-337

ISSN: 1025-5842

Editora: Taylor & Francis

Indexação

ISI Web of Knowledge - 38 Citações

ISI Web of Science

Scopus - 39 Citações

Classificação Científica

FOS: Ciências da engenharia e tecnologias > Biotecnologia ambiental

CORDIS: Ciências Tecnológicas > Engenharia > Engenharia biomédica ; Ciências Tecnológicas > Engenharia > Engenharia de biomateriais

Outras Informações

ID Authenticus: P-003-AG3

DOI: 10.1080/10255840903208197

Abstract (EN): The mechanical properties of the vaginal tissue need to be characterised to perform accurate simulations of prolapse and other pelvic disorders that commonly affect women. This is also a fundamental step towards the improvement of therapeutic techniques such as surgery. Issues like the efficiency of using autologous tissue in pelvic reconstruction may be addressed. The goal of this study was to characterise the elastic behaviour of vaginal tissue. For this purpose, prolapsed vaginal tissue from eight different post-menopausal patients, excised during prolapse corrective surgery, was mechanically tested. The mechanical testing of vaginal tissue, consisting of uniaxial tension tests performed along the longitudinal axis of the vagina, revealed the nonlinear mechanical behaviour of the tissue. The material model parameters were fit to the experimental data using the Levenberg-Marquardt optimisation algorithm. All the curve fittings showed a good agreement between experimental and theoretical results, evidenced by R2 values close to 1 and by very low epsilon values.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 11