Abstract
The conversion of a previously arthrodesed knee to a total knee arthroplasty is an alternative seldom used. However, arthroplasty would provide greater functionality to the arthrodesed joint. Since it is a technically demanding procedure, not exempt from complications, there is controversy about the role of this intervention. To answer this question we used Epistemonikos, the largest database of systematic reviews in health, which is maintained by screening multiple information sources, including MEDLINE, EMBASE, Cochrane, among others. We extracted data from the systematic reviews, reanalyzed data of primary studies, conducted a meta-analysis and generated a summary of findings table using the GRADE approach. We identified two systematic reviews including 10 studies overall, none of which corresponded to a randomized trial. We concluded the conversion of knee arthrodesis to total knee arthroplasty could increase the functionality, but it is not clear whether it increases the complications or if it has any impact on pain or patient satisfaction because the certainty of the evidence is very low.
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