Predictors of moderate–severe functional limitation after primary Total Knee Arthroplasty (TKA): 4701 TKAs at 2-years and 2935 TKAs at 5-years  J.A. Singh, M. O'Byrne, S. Harmsen, D. Lewallen  Osteoarthritis and Cartilage  Volume 18, Issue 4, Pages 515-521 (April 2010) DOI: 10.1016/j.joca.2009.12.001 Copyright © 2010 Terms and Conditions

Fig. 1 2-year outcomes: Each figure shows the odds ratio of moderate–severe limitation in each activity (walking, stairs, chair) and for overall limitation for each category of variable as compared to the respective reference category. Each logistic regression analysis for walking, stairs, chair and overall limitation was adjusted for age, gender, BMI, comorbidity, income, distance from medical center, ASA class, operative diagnosis and the type of implant fixation. The dotted line represents an odds ratio of 1. Point estimates of odds ratios are represented by the solid circles; the whiskers represent the upper and lower 95% confidence interval estimates. Variables are significantly associated with the outcome in instances where the 95% confidence interval for the odds ratio does not cross one. For example, 5-point increase in Charlson index, female gender, age 71–80 and >80 and BMI, 30–34.9, 35–39.9 and ≥40 were associated with significantly increased odds of overall moderate–severe activity limitation. Osteoarthritis and Cartilage 2010 18, 515-521DOI: (10.1016/j.joca.2009.12.001) Copyright © 2010 Terms and Conditions

Fig. 2 5-year outcomes: Each figure shows the odds ratio of moderate–severe limitation in each activity (walking, stairs, chair) and for overall limitation. Each logistic regression analyses for walking, stairs and chair limitation was adjusted for age, gender, BMI, comorbidity, income, distance from medical center, ASA class, operative diagnosis and the type of implant. Osteoarthritis and Cartilage 2010 18, 515-521DOI: (10.1016/j.joca.2009.12.001) Copyright © 2010 Terms and Conditions