Elevated-rim acetabular liners recently were shown to be associated with improved stability of total hip prostheses in a large clinical series.
However, the effect of this design on loosening remains unknown.
To address this question, we reviewed the results of 5167 primary and revision total hip arthroplasties that had been performed at our institution from September 1,1985, through December 31,1991 ; 2469 of the acetabular components had an elevated-rim liner (10 degrees of elevation), and 2698 had a standard liner.
Five-year follow-up data were available for 1237 hips (174 that had an elevated-rim acetabular liner and 1063 that had a standard acetabular liner).
The cumulative probability of revision because of loosening of the implant was estimated as a function of time since the operation with use of the Kaplan-Meier survivorship method.
The five-year probability of survival of the acetabular component was 98.8 per cent (95 per cent confidence interval, 97.9 to 99.6 per cent) for the prostheses that had an elevated-rim liner and 98.3 per cent (95 per cent confidence interval, 97.7 to 99.0 per cent) for those that had a standard liner (p=0.87). (...)
Mots-clés Pascal : Prothèse, Total, Hanche, Epidémiologie, Prévalence, Complication, Désinsertion, Composante, Acétabulum, Etude comparative, Conception, Implant, Homme, Chirurgie orthopédique
Mots-clés Pascal anglais : Prosthesis, Total, Hip, Epidemiology, Prevalence, Complication, Desinsertion, Component, Acetabulum, Comparative study, Design, Implant, Human, Orthopedic surgery
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 97-0500635
Code Inist : 002B25I. Création : 13/02/1998.