The Role of Implant Constraint in Revision Total Knee Arthroplasty

The goal of revision total knee arthroplasty is to restore the anatomical alignment of the knee and to provide a stable joint. Joint stability is obtained by balancing the various knee ligaments remaining at the time of revision surgery and by using an implant with added stability if necessary. Understanding the limits of the various designs available (cruciate retaining, cruciate substituting, valgus-varus constraining, and linked) should help the surgeon construct a stable and durable construct.