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. 2010 Oct;25(7):1091-5, 1095.e1-4.
doi: 10.1016/j.arth.2009.07.020.

Predictors of moderate-severe functional limitation 2 and 5 years after revision total knee arthroplasty

Jasvinder A Singh  1 , Megan M O'Byrne, W Scott Harmsen, David G Lewallen
Affiliations

Predictors of moderate-severe functional limitation 2 and 5 years after revision total knee arthroplasty

Jasvinder A Singh et al. J Arthroplasty. 2010 Oct.

Abstract

In patients who underwent revision TKA from 1993 to 2005 and responded to follow-up questionnaires 2 or 5 years postrevision TKA, we studied whether body mass index (BMI), comorbidity (measured by validated Deyo-Charlson index), sex, and age predict activity limitation 2 and 5 years after revision TKA. Overall moderate-severe activity limitation was defined as 2 or more activities (walking, stairs, rising chair) with moderate-severe limitation. Multivariable logistic regressions also adjusted for income, diagnosis, and distance from medical center and American Society of Anesthesiologists physical status score. The prevalence of overall moderate-severe activity limitation was high: 46.5% (677/1456) at 2 years and 50.5% (420/832) at 5 years postrevision TKA. At both 2 and 5 years of follow-up, BMI of 40 or higher, higher Deyo-Charlson score, female sex, and age greater than 80 years, each significantly predicted higher odds of moderate-severe overall activity limitation.

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Conflict of interest statement

Financial Conflict: One of the authors (DL) has received royalties/speaker fees from Zimmer, has been a paid consultant to Zimmer and has received institutional research funds from DePuy, Stryker and Zimmer.

Each author certifies that his or her institution has approved the human protocol for this investigation and that all investigations were conducted in conformity with ethical principles of research.

Figures

Figure 1
Figure 1
Multivariable-adjusted Odds ratio (95% confidence interval) for Moderate-Severe Limitations in Walking, Climbing Stairs, Rising from Chair and Moderate-Severe Overall Activity limitation at 2-years post-Revision TKA (1A) and at 5-years post-Revision TKA (1B)
Figure 1
Figure 1
Multivariable-adjusted Odds ratio (95% confidence interval) for Moderate-Severe Limitations in Walking, Climbing Stairs, Rising from Chair and Moderate-Severe Overall Activity limitation at 2-years post-Revision TKA (1A) and at 5-years post-Revision TKA (1B)
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