Revision of metal-on-metal resurfacing arthroplasty of the hip: the influence of malpositioning of the components. Academic Article uri icon

Overview

abstract

  • We have reviewed 42 patients who had revision of metal-on-metal resurfacing procedures, mostly because of problems with the acetabular component. The revisions were carried out a mean of 26.2 months (1 to 76) after the initial operation and most of the patients (30) were female. Malpositioning of the acetabular component resulted in 27 revisions, mostly because of excessive abduction (mean 69.9 degrees ; 56 degrees to 98 degrees ) or insufficient or excessive anteversion. Seven patients had more than one reason for revision. The mean increase in the diameter of the component was 1.8 mm (0 to 4) when exchange was needed. Malpositioning of the components was associated with metallosis and a high level of serum ions. The results of revision of the femoral component to a component with a modular head were excellent, but four patients had dislocation after revision and four required a further revision.

publication date

  • September 1, 2008

Research

keywords

  • Arthroplasty, Replacement, Hip
  • Hip Prosthesis
  • Prosthesis Failure

Identity

Scopus Document Identifier

  • 53649088948

Digital Object Identifier (DOI)

  • 10.1302/0301-620X.90B9.19891

PubMed ID

  • 18757954

Additional Document Info

volume

  • 90

issue

  • 9