Distal stem features improve the torsional resistance of long-stem cemented revision hip stems: an in vitro biomechanical study.
Proc Inst Mech Eng H
; 227(5): 503-9, 2013 May.
Article
en En
| MEDLINE
| ID: mdl-23637260
ABSTRACT
When proximal bone stock is compromised at revision hip arthroplasty, distal fixation is often relied upon for stability of the femoral component. In such circumstances, torsional forces can result in debonding and loosening. This study compared the torsional behaviour of a cemented, polished and featureless (plain) stem with cemented, polished stems featuring fins or flutes. The finned stem construct was found to be significantly stiffer than the fluted stem. The maximum torque of the finned and fluted stems was significantly higher than the plain stem, with no difference between the finned and fluted stems. Distal stem features may provide a more reliable and greater resistance to torque in polished, cemented revision hip stems. Finned stem features may also increase the stiffness of the construct.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Cementación
/
Cabeza Femoral
/
Prótesis de Cadera
Tipo de estudio:
Evaluation_studies
Idioma:
En
Revista:
Proc Inst Mech Eng H
Asunto de la revista:
ENGENHARIA BIOMEDICA
Año:
2013
Tipo del documento:
Article
País de afiliación:
Reino Unido