A cadaveric study of posterior dislocation after total hip replacement-effects of head diameter and acetabular anteversion.
Int Orthop
; 35(3): 325-9, 2011 Mar.
Article
em En
| MEDLINE
| ID: mdl-20177891
ABSTRACT
The size of the femoral head and acetabular anteversion are crucial for stability in total hip replacements. This study examined the effects of head diameter and acetabular anteversion on the posterior instability after total hip replacement in an in vivo setting. The acetabular shell was inserted at 0-20° of anteversion at five degree intervals. By using different head sizes (28 mm, 32 mm, 36 mm), the degrees of dislocation were recorded by computer navigation. The 36-mm group consistently showed better stability compared with the 32- and 28-mm groups, regardless of the degree of cup anteversion. Within each group of head size, the hip was significantly more stable when the cup anteversion increased from 0° to 10°. The difference became insignificant when it increased from 15° to 20°.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Desenho de Prótese
/
Artroplastia de Quadril
/
Luxações Articulares
/
Cabeça do Fêmur
/
Articulação do Quadril
/
Acetábulo
Tipo de estudo:
Etiology_studies
Limite:
Humans
/
Male
Idioma:
En
Ano de publicação:
2011
Tipo de documento:
Article