No association between serum metal ions and implant fixation in large-head metal-on-metal total hip arthroplasty.

ABSTRACT:

Background

The mechanism of failure of metal-on-metal (MoM) total hip arthroplasty (THA) has been related to a high rate of metal wear debris, which is partly generated from the head-trunnion interface. However, it is not known whether implant fixation is affected by metal wear debris.

Patients and methods

49 cases of MoM THA in 41 patients (10 women) with a mean age of 52 (28-68) years were followed with stereoradiographs after surgery and at 1, 2, and 5 years to analyze implant migration by radiostereometric analysis (RSA). Patients also participated in a 5- to 7-year follow-up with measurement of serum metal ions, questionnaires (Oxford hip score (OHS) and Harris hip score (HHS)), and measurement of cup and stem positions and systemic bone mineral density.

Results

SUBMITTER: Hjorth MH 

PROVIDER: S-EPMC4105765 | biostudies-literature | 2014 Aug

REPOSITORIES: biostudies-literature