Failure mechanism of a constrained liner: a case report.
Acta Orthop Belg
; 78(1): 129-33, 2012 Feb.
Article
en En
| MEDLINE
| ID: mdl-22523941
ABSTRACT
Instability after primary and revision total hip arthroplasty continues to be a problem. The use of a constrained system helps manage this problem. A new constrained total hip arthroplasty, Trilogy constrained liner (Zimmer, Warsaw, IN), is currently in use. We report a case showing dislocation following a Trilogy constrained total hip arthroplasty. In this case, when an impingement between the femoral neck and the anterior part of the polyethylene liner occurred, the hip dislocated easily although both polyethylene and reinforcing ring were properly positioned. The lever-out test showed that the Trilogy constrained liner is safe and compares favourably with other implants. Surgeons should be aware that constrained acetabular systems are not infallible and they should pay attention to place implants in good position even when constrained THA is performed.
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Bases de datos:
MEDLINE
Asunto principal:
Falla de Prótesis
/
Prótesis de Cadera
Tipo de estudio:
Etiology_studies
Límite:
Female
/
Humans
/
Middle aged
Idioma:
En
Revista:
Acta Orthop Belg
Año:
2012
Tipo del documento:
Article
País de afiliación:
Japón