Predicting outcome following hip arthroplasty using radiostereometry
Research type
Research Study
Full title
PredIcting early and late implaNt Failure followINg hIp arThroplasty using radiostEreometry (INFINITE)
IRAS ID
284309
Contact name
Anna H K Riemen
Contact email
Sponsor organisation
University of Aberdeen and NHS Grampian
Duration of Study in the UK
0 years, 3 months, 31 days
Research summary
Total hip replacement is one of the most frequent and successful operations performed in the UK. However, failure of at least 50% of the implants is expected by 25 years after implantation due to progressive bone loss and implant loosening. Radiostereometry (RSA) is an x-ray technique that allows the early wear and movements of the hip replacement in the bone to be measured relative to special implanted beads. By 2 years following surgery, RSA is thought to allow us to predict long term outcomes for the hip.
Aberdeen have gained significant expertise in the Radiostereometry technique since our initial study in 1998 of four types of cemented hip replacement. We reviewed these patients at 2 and then 5 years after original surgery. We now would like to carry out a longer term (18 to 20 years) follow up on the same patients to see if Radiostereometry has truly predicted failure. We also want to examine the movement and wear of successful replacements. This will represent one of the longest Radiostereometry follow up study achieved worldwide. The results can be used to further improve our understanding on the causes of implant success and failure.
REC name
Wales REC 5
REC reference
21/WA/0351
Date of REC Opinion
25 Nov 2021
REC opinion
Favourable Opinion