The influence on strain shielding of material stiffness of press-fit femoral components

• Tipo: Artigo em Revista Científica Internacional
• Data: 2002

Autores

Simoes, JA (Autor) Outra; Mário Vaz (Autor) FEUP

Revista

Título: Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine

Vol. 216

Páginas: 341-346

ISSN: 0954-4119

Editora: SAGE

Indexação

ISI Web of Knowledge - 7 Citações

Scopus - 8 Citações

Outras Informações

ID Authenticus: P-000-RWR

DOI: 10.1243/09544110260216612

Abstract (EN): The investigation and development of hip prostheses that can provoke identical strain patterns with those of the intact femur (physiological strains) are challenging design problems that have been addressed by several researchers. The modification of the physiological femoral strain pattern provokes adverse tissue biological reactions such as bone hypertrophy, as well as possible mechanical failure of the bone-implant construction. Investigators have used numerical and experimental methods to study the influence of the prosthesis material and geometry on physiological strain deviation. Within the present study, same geometry femoral components composed of different materials have been analysed using strain gauges. The effect of stem stiffness on the strain deviation relatively to those obtained with the intact femur was assessed. Five similar Freeman's prostheses made of different materials (steel, aluminium, composite and polyurethane) at the proximal and middle distal regions were manufactured and tested. The results revealed that only at the proximal lateral and proximal medial aspects of the femur were some differences observed between the strain patterns of the prostheses studied.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 6