Influence of polyethylene and femoral head surface quality on wear: a retrieval study.
Int Orthop
; 25(1): 29-34, 2001.
Article
em En
| MEDLINE
| ID: mdl-11374264
ABSTRACT
Thirty-two polyethylene sockets and 22 femoral heads were retrieved because of aseptic loosening more than 9 years after total hip arthroplasty. The volumetric wear rates of the retrieved polyethylene sockets were significantly greater in those coupled with an alumina head (P < 0.05). The retrieved alumina heads showed significantly better surface roughness and roundness than heads of Co-Cr and of stainless steel (P < 0.05). However, no significant difference was found in polyethylene quality demonstrated as fusion defects among the three different groups. The present study suggests that maintaining better surface roughness and roundness of the femoral heads does not always result in an in vivo reduction of polyethylene wear.
Texto completo:
1
Coleções:
01-internacional
Temas:
Geral
Base de dados:
MEDLINE
Assunto principal:
Falha de Prótese
/
Ligas de Cromo
/
Artroplastia de Quadril
/
Polietileno
/
Óxido de Alumínio
/
Prótese de Quadril
Limite:
Adult
/
Aged
/
Female
/
Humans
/
Male
/
Middle aged
Idioma:
En
Revista:
Int Orthop
Ano de publicação:
2001
Tipo de documento:
Article
País de afiliação:
Japão