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Revision of metal-on-metal resurfacing arthroplasty of the hip: THE INFLUENCE OF MALPOSITIONING OF THE COMPONENTS
- Article from:
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Journal of Bone and Joint Surgery
- Article date:
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September 1, 2008
- Author:
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Copyright informationCopyright British Editorial Society of Bone & Joint Surgery Sep 2008. Provided by ProQuest LLC. (Hide copyright information)
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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.
Malposition ing of the acetabular component resulted in 27 revisions, mostly because of excessive abduction (mean 69.9°; 56° to 98°) 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 ...