Primary total knee arthroplasty using rotating-hinge prosthesis in severely affected knees

Purpose A rotating-hinge total knee prosthesis may be utilized for the treatment of global instability or severe bone loss around the knee. The outcome of primary total knee arthroplasty (TKA) using Endo-Modell (Link ® ) rotating-hinge prosthesis was evaluated. Methods Retrospectively, review of 50 cases (40 patients) at a mean follow-up of 15 years (range, 10–18) who underwent primary TKA using Endo-Modell (Link ® ) was performed. Indications included severe primary osteoarthritis with substantial ligament laxity, severe rheumatic arthritis with extreme ligament instability and bone loss, supracondylar nonunion, charcot arthropathy, and posttraumatic arthritis. Knee Society Score (KSS) and radiographic analysis were done for preoperative and at latest follow-up. Statistical analysis was done using the Student’s t test with the level of significance of p