Polyethylene wear is a leading cause of failure in total knee arthroplasty (TKA). Knowing the stresses experienced by the polyethylene would be pivotal information for efforts to improve polyethylene longevity. Previous investigations into the stress and wear of the polyethylene have required estimates of in-vivo conditions [1]. This work investigates the feasibility of using actual in-vivo kinematics obtained using dual fluoroscopy as boundary conditions for finite element analysis of the polyethylene.

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