Cementless Metaphyseal Sleeve Fixation in Revision KneeArthroplasty: Our Experience with an Arabic Population atthe Midterm

Metaphyseal sleeve (MS) fixation in revision knee arthroplasty (RKA) among Western populations has been reportedwith very encouraging outcomes. 'e aim of this study was to report our experience with the use of MS in RKA among an Arabicpopulation. Clinical and radiographic outcomes and implant survivorship were reported at a minimum follow-up of 2 years and amean follow-up of 4.1 years.Methods. A retrospective analysis was conducted on prospectively collected data of patients whounderwent RKA with a MS in combination with a cementless stem (femoral or tibial). Range of motion (ROM) and Knee SocietyScore (KSS) were obtained pre- and postoperatively. Complications, occurrence of stem-tip pain, and implant survival weredocumented. Knee radiographs were obtained to evaluate the alignment and osseointegration or loosening of the MS.Results. Atotal of 52 sleeves (27 tibial and 25 femoral) implanted in 27 RKAs (27 patients) were included. 'e mean follow-up period was4.1±1.8 (2–7.5) years. Postoperatively, the ROM improved from 89.3±9.2 to 106.3±11.4 (p�0.19) and the KSS also significantlyimproved, from 102.9±35.6 to 130.2±33.7 (p<0.001). One patient (3.7%) developed heterotopic ossification, and another one(3.7 %) had a stem-tip pain on the tibial side; both were managed conservatively. One patient (3.7 %) sustained a fracture andrequired reoperation. None of the sleeves showed progressive radiolucent lines, and none required revision. 'e aseptic sur-vivorship and overall survivorship at a mean of 4.1 years were 100% and 96.3%, respectively.Conclusion. MS provided successfulmidterm outcomes that were maintained in obese patients with different levels of constraint. Our series supports their use as aviable option in RKA.