Complications and outcomes in 14 cases of revision total knee arthroplasty with hinged implant

The aim of the study was to determine the effectiveness and complications of hinged TKA revisions and the results of periprosthetic joint infection (PJI) treatment in such cases.We have retrospectively reviewed 14 hinged TKA (Orthopedic Solution System, OSS, Biomet) in 14 patients. The patient average age was 70 years (range 56 to 83). The indication for the hinged TKA was: implant loosening (4 cases), periprosthetic fracture (3 cases), TKA instability (1 case) revision after spacer removal (1 case), advanced knee instability during primary TKA (3 cases), pseudoarthrosis due to previous tibial osteotomy (1 case) and tumor resection of the distal femur (1 case). The mean follow up was 26 months (range 6 to 60).There have been 8 revisions in six patients. The indications for revision have been: infection (5 cases), skin necrosis (1 case), flexion contracture (1 case), and patellar luxation with extensor mechanism rupture (1 case). No aseptic loosening has been noted. In septic cases debridement was performe...