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Results of Revision Total Knee Arthroplasty

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Singapore Med J 2000; 41(1): 6-8
Results of Revision Total Knee Arthroplasty

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TYT Tan, KP Teo, KH Tan
Correspondence: Dr D H C Su

ABSTRACT
Background/Aim of Study
 The results of primary total knee arthroplasties have improved over the years but some still fail, requiring revision. Revision total knee arthroplasty is technically more difficult and has not enjoyed the same success rates as the index operation. The aim of this retrospective study was to review the results of revision total knee arthroplasties carried out at our centre. This is the first study in Singapore on revision total knee arthroplasty.
Methods A retrospective study where 17 patients (18 knees) had been followed up since their revision operations were clinically assessed. Based on the Knee Society Clinical Scoring System, they were assigned separate knee and function scores (each having a maximum possible 100).
Results The mean knee score was 76 (range 35-93), which rates as good. Of the 18 knees, 67% had excellent or good knee scores. By comparison, the mean function score was 56 (range 0-90) which rates as poor and 33% had excellent or good function scores.
Conclusion Revision total knee arthroplasty achieves good and excellent results in spite of technical difficulties often associated with the revision operation. The difference in mean knee and function scores emphasises that many other factors such as physical strength and stamina affect function. Nevertheless, 15 patients were able to walk out of their house and around their neighbourhood for varying distances. This satisfied their expectations and the poor mean function score may reflect different expectations of patients overseas from whence this scoring system originated.

Keywords: total knee arthroplasty
Singapore Med J 2000; 41(1): 6-8

http://smj.org.sg/sites/default/files/4101/4101a1.pdf
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