Figure 5From: The pendulum test as a tool to evaluate passive knee stiffness and viscosity of patients with rheumatoid arthritisResults of univariate linear analyses. The normal condition (N) and the pathology severity (ACR classification, [6]) were plotted against stiffness (A), viscosity (B), F1amp (C) and E1amp (D). R2 = coefficient of determination; N = normal subjects.Back to article page