Abstract
Introduction and Aims: The aim of this paper was to assess the 10 to 15-year clinical and radiographic results of uncemented LCS meniscal-bearing total knee replacements used to revise failed uni-compartmental knee replacements.
Method: Eleven (5 M: 6 F) cementless LCS meniscal-bearing total knee replacements were implanted in patients who had failed uni-compartmental knee replacements for medial compartment osteoarthritis. Mean time interval between the uni-compartmental knee replacement and the LCS total knee replacement was 18 months (12–72 months). Minimum follow-up of all patients reviewed was 10 years (mean 12.9 years). Average age of patients at the time of surgery was 60.1 years (47–74 years). Clinical and radiographic analysis was performed. American knee society pain and function scores were determined and Kaplan-Meier survivorship analysis was conducted. Failure was defined as revision due to any cause.
Results: At the time of the 10 to 15-year follow-up, all 11 patients were alive and were all reviewed. Four patients (three males, one female) had a revision of their LCS total knee replacement. The average time to revision of the LCS total knee replacement was 26 months (1–60 months). The average knee society pain and function scores were 80 and 45 at the final follow-up evaluation. The average range of movement was 95 degrees (80–100 degrees). The survival rate of 60% (95 % confidence interval) was noted at 12 years.
Conclusion: After 10 to 14 years of follow-up, the cementless LCS meniscal bearing total knee replacement for a previously failed uni-compartmental knee replacement was found to have a 37% revision rate.
These abstracts were prepared by Editorial Secretary, George Sikorski. Correspondence should be addressed to Australian Orthopaedic Association, Ground Floor, The William Bland Centre, 229 Macquarie Street, Sydney, NSW 2000, Australia.
None of the authors is receiving any financial benefit or support from any source.
