Due to copyright issues, an electronic copy of the thesis must be ordered from the faculty. For the faculty to have time to process the order, the order must be received by the faculty at the latest 2 days before the public defence. Orders received later than 2 days before the defence will not be processed. After the public defence, please address any inquiries regarding the thesis to the candidate.
Trial Lecture – time and place
See Trial Lecture.
Adjudication committee
- First opponent: Professor Maiken Stilling, Aarhus University, Denmark
- Second opponent: Professor Simon Farnebo, Linköping University, Sweden
- Third member and chair of the evaluation committee: Professor Per-Henrik Randsborg, University of Oslo
Chair of the Defence
Associate Professor Frede Frihagen, University of Oslo
Principal Supervisor
Consultant Ole Reigstad, Martina Hansens Hospital
Summary
Total wrist arthroplasty has never achieved the same good results as hip and knee arthroplasties with regard to function and implant survival.
The first aim of this thesis was to investigate methods to evaluate wrist arthroplasties. The second aim was to compare the two best documented wrist implants, the Motec and ReMotion, in a randomized controlled trial.
We found that radiostereometric analysis (RSA), a method used to measure implant migration in joint arthroplasties, is able to precisely and accurately measure migration of wrist implants.
We also found that dual energy x-ray absorptiometry (DXA), can be used to measure bone density around the proximal but not the distal component of wrist arthroplasties.
At two years follow-up we found no differences between the Motec and ReMotion regarding pain improvement, function, implant migration, bone density, and reoperations including revisions. Pain and function improved with both implants, and on group level they were both stable. The reoperation rate was high.
Additional information
Contact the research support staff.