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Acetabular Component Migration Measured Using Radiostereometric Analysis Following Revision Total Hip Arthroplasty: A
John M Abrahams1,2, Stuart A Callary1,2, Zachary Munn1
1Centre for Orthopaedic and Trauma Research (J.M.A., S.A.C., S.W.J., Q.H., D.W.H., and L.B.S.) and the Joanna Briggs Institute (Z.M.), The University of Adelaide, Adelaide, South Australia, Australia.
Abstract:
* Radiostereometric analysis (RSA) studies of acetabular component migration following revision total hip arthroplasty (THA) have a large variation in their methodology and reporting of results, and, therefore, they may not be directly comparable. Standardization of RSA reporting is recommended. * In our review of RSA studies, there was a trend for cemented acetabular components to have larger amounts of early proximal migration than uncemented acetabular components. Results regarding cemented and uncemented components should be reported separately. * Cohorts that addressed larger acetabular defects were associated with a larger amount of early migration. * Reporting the migration result at 1 and 2 years postoperatively may enable earlier identification of poorly performing implants.
