Use of stepped porous titanium metaphyseal sleeves for tibial defects in revision total knee arthroplasty: short term results.

Abstract Stepped porous titanium metaphyseal sleeves may provide an option for enhanced fixation in managing challenging tibial defects in revision total knee arthroplasty (TKA). We retrospectively reviewed data on 51 patients who underwent revision TKA utilizing a metaphyseal sleeve for Anderson Orthopaedic Research Institute (AORI) Type II and III tibial defects between June 2007 and July 2011. Of these 51 patients, 36 patients had complete clinical and radiographic data. At final follow-up (mean: 38months) significant improvements in knee range of motion and Knee Society scores were observed postoperatively ( P