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Sensitivity analysis of the moment arm profiles for muscles about (A,B) the hip, (C,D) knee, and (E,F) ankle. Proximal (prox) and distal (dist) attachment points for the free muscle segment are individually moved ±1 mm, and the moment arm profile is calculated. Moment arm profiles are recorded under the same isolated joint motion presented in Figure 6. y-Axes are moment arm lengths normalized to the model’s femur length.
