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Coefficient of friction is poorly correlated with tissue strains (A) Articular cartilage fluorescently stained under shear loading at three separate time points in the first half of the shear cycle (B) Calculation of time in static friction (tμ static) and time in kinetic friction (tμ kinetic) over one shear cycle (C) Adhesion time ratio is strongly correlated with peak shear strains at the tissue surface, while (D) the coefficient of friction is weakly correlated.
