Revision of the Unstable Total Knee Arthroplasty Outcome Predictors

Azzam K., Parvizi J., Kaufman D., Purtill J. J., Sharkey P. F., Austin M. S.

JOURNAL OF ARTHROPLASTY, vol.26, no.8, pp.1139-1144, 2011 (SCI-Expanded) identifier identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 26 Issue: 8
  • Publication Date: 2011
  • Doi Number: 10.1016/j.arth.2011.02.028
  • Journal Name: JOURNAL OF ARTHROPLASTY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.1139-1144
  • Acibadem Mehmet Ali Aydinlar University Affiliated: No

Abstract

Revision arthroplasty is often required for confirmed cases of symptomatic tibiofemoral instability after total knee arthroplasty (TKA). We evaluated the results of revision for TKA instability in a consecutive series of 67 patients (68 knees) between 2000 and 2006. Outcome measures were surgeon-based assessment of knee stability, Knee Society Score, and Short Form Health Survey 36. At an average of 39 months of follow-up, the mean Knee Society Score and Short Form Health Survey 36 physical and mental scores were 76, 53, and 67 points, respectively. Knee instability persisted in 14 patients (22%). Data at the 95% confidence level revealed that revising both the femoral and tibial components, the use of femoral augments, and smaller joint line elevation as measured on radiographs correlated significantly with achieving a stable knee. In revision surgery for TKA instability, revision of both components and the use of femoral augments seem to offer the most predictable outcome.