Hip prothesis: an in vitro wear protocol based on a comparison between gravimetric and profilometric analysis.
Int J Artif Organs
; 22(4): 226-9, 1999.
Article
em En
| MEDLINE
| ID: mdl-10466954
ABSTRACT
Ultra high molecular weight polyethylene acetabular cups were analysed by means of a shadowgraph method (using a profile projector) to measure linear wear. The results were compared with those of previous wear tests performed on a hip joint simulator. Twelve polyethylene acetabular cups were analysed. The specimens were evaluated visually for evidence of polyethylene wear. Examination of the polyethylene inner surface did not reveal evidence of surface failure such as delamination, fatigue cracks or scratches. Volumetric wear was calculated using a formula based on dimensional change due to the penetration of the femoral head in the acetabular cup. It was found to be of the same order of magnitude as the wear obtained in in vitro experimental tests.
Buscar no Google
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Prótese de Quadril
Idioma:
En
Revista:
Int J Artif Organs
Ano de publicação:
1999
Tipo de documento:
Article
País de afiliação:
Itália