Revision total knee arthroplasty

Background: Revision total knee arthroplasties, are performed with increasing frequency due to the increasing numbers of primary arthroplasties. Objectives: To retrospectively analyze 71 patients-who underwent 78 revision total knee arthroplasties during the years 1991 to 1999 Methods: We evaluated the revised knees using the Knee Society Clinical Rating System after an average follow-up period of 3 years and 9 months (2-10 years). The indications for revision included pain-and instability, deep infection of the joint, complaints linked to the patella, or post-trauma to the operated knee. Results: The average knee score (evaluation of the knee joint itself) calculated after the revision was 74.5. The results on the knee score were excellent ( > 85) in 48% of patients and poor,(< 60) in 22%. The functional, results (patient's ability to walk and climb stairs) were only 48.3. Conclusion: Although the revision of total knee replacements is known to be problematic, most patients show good results on kneed examination, and reasonable functional results given the factors involved.