Revision of Unicondylar to Total Knee Arthroplasty: A Systematic Review
Nashat A Siddiqui*, 1, Zafar M Ahmad 2
Identifiers and Pagination:Year: 2012
Issue: Suppl 2
First Page: 268
Last Page: 275
Publisher Id: TOORTHJ-6-268
Article History:Received Date: 9/2/2012
Revision Received Date: 28/2/2012
Acceptance Date: 10/3/2012
Electronic publication date: 27/7/2012
Collection year: 2012
open-access license: This is an open access article licensed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted, non-commercial use, distribution and reproduction in any medium, provided the work is properly cited.
Isolated unicompartmental osteoarthritis in the young patient is a difficult problem to treat; they may be too young to consider total knee arthroplasty due to difficulties with inevitable future revision. Unicompartmental knee arthroplasty is one possible solution as it is perceived by some as being a smaller surgical insult than total knee arthroplasty, with easier revision to total knee arthroplasty than a revision total knee arthroplasty. A total knee arthroplasty performed as a revision unicondylar knee arthroplasty is thought by some authors to have equivalent functional outcomes to a primary total knee replacement.
However, there have been several studies suggesting that revision is not as simple as suggested, and that function is not as good as primary total knee arthroplasty.
We performed a systematic review of the literature regarding outcomes after revision of a unicondylar knee arthroplasty.
Although there are many studies proposing selective use of the unicondylar knee arthroplasty, there are a number of studies highlighting difficulties with revision and poorer outcomes, and, therefore, the unicondylar knee arthroplasty cannot be considered a small procedure that will 'buy time' for the patient, and have results equal to a primary knee arthroplasty when revised. Further controlled studies, ideally randomised, are required before final conclusions can be drawn.