Introduction
end-stage hip osteoarthritis, THA
STILL
Total hip arthroplasty (THA) is the only viable treatment for end-stage hip osteoarthritis, with high long-term survivorship and success for most patients. Still, with the continuous increase in number of THA procedures performed, comes an inevitable parallel increase in the number of revision THA procedures, especially due to the increased rate of THA in younger patients.Early migration of the acetabular cup can lead to aseptic loosening and has been reported to be correlated to late revision.Radiostereometric analysis (RSA) is recognised as the gold standard for implant migration tracking, with an accuracy of 0.2 mm of translation and 0.5 degrees for rotations.