Acetabular wedge augments for uncontained tibial plateau defects in revision total knee arthroplasty

Abstract

Tibial bone loss is a common scenario encountered during revision total knee arthroplasty. Reconstructive options depend on the amount and location of bone loss, but few good solutions exist to address large, uncontained tibial defects where cortical support is lost in the metadiaphyseal region. We describe a novel technique using acetabular augments to buttress a revision tibial component and recreate a hemiplateau during tibial revision total knee arthroplasty. In selected scenarios, this construct can create a biomechanically friendlier surface onto which to support the tibial tray and a less expensive option when compared to traditional stacked augments or cones. Level of Evidence: IV–Case series. Keywords: Revision total knee arthroplasty, Acetabular augment, Tibial bone loss, Uncontained defect