An 8- to 10-year follow-up of 26 computer-assisted total knee arthroplasties

The objective of this article was to assess the long-term follow-up of the first 26 computer-assisted total knee arthroplasties (TKAs) performed between January, 1997, and December, 1998, using the prototype of the OrthoPilot (B. Braun Aesculap, Tuttlingen, Germany). Three patients died of unrelated causes at 3, 8, and 9 years after surgery and one was lost to follow-up. One prosthesis was partially revised after 5 years of follow up, because of untimely wear of the polyethylene. Another will be revised because of femoral implant loosening. Therefore, results are based on 20 prostheses after a mean follow up of 98.25 +/- 10.28 months (range, 80-119), with a survival rate of 90%. The majority of patients reported being satisfied or very satisfied with their prosthesis (17 patients; 85%), and three (15%) could not benefit fully from the prosthesis because of other issues, including spinal handicap, non operated homolateral coxarthrosis, and Parkinson 's disease.