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Outcomes for revision total knee replacement after unicompartmental knee replacement
Burak Akan1, Tuğrul Yıldırım2, Berk Güçlü2
1Department of Orthopedics and Traumatology, Faculty of Medicine, Ufuk University, Ankara, Turkey. burakakan1977@yahoo.co.uk.
Acta Orthopaedica Et Traumatologica Turcica
|September 18, 2014
Summary
Revision total knee replacement (TKR) after failed Oxford phase 3 medial unicompartmental knee replacement (UKR) shows satisfactory early clinical results. The type of UKR fixation (cemented or uncemented) did not impact TKR success.
Area of Science:
- Orthopedic Surgery
- Biomedical Engineering
- Knee Arthroplasty
Background:
- Unicompartmental knee replacement (UKR) is an alternative to total knee replacement (TKR).
- Failure of UKR necessitates revision surgery, often with TKR.
- Outcomes following TKR after UKR failure are important for surgical decision-making.
Purpose of the Study:
- To evaluate the clinical outcomes of total knee replacement (TKR) following the failure of Oxford phase 3 medial unicompartmental knee replacement (UKR).
- To identify common reasons for UKR failure requiring revision to TKR.
- To assess the influence of UKR fixation type on TKR success.
Main Methods:
- Retrospective, observational study design.
- Inclusion of 24 patients undergoing revision TKR after aseptic UKR failure.
- Assessment of outcomes using the Knee Society Score (KSS).
Main Results:
- Common causes for revision included mobile bearing dislocation and unexplained pain.
- Mean KSS improved significantly from 50.3 preoperatively to 82.2 postoperatively.
- 17 excellent, 4 good, 2 fair, and 1 poor outcome were reported.
Conclusions:
- Revision TKR following failed UKR is a technically manageable procedure.
- Satisfactory early clinical results are achievable with revision TKR after UKR failure.
- The fixation method of the prior UKR (cemented vs. uncemented) did not affect TKR outcomes.
