Fig. 6From: Biomechanical properties of five different currently used implants for open-wedge high tibial osteotomyDefinition of ΔF and ΔX to calculate dynamic stiffness in the cyclic fatigue to failure tests (Maas et al. 2013). ΔF and ΔX are the peak-to-peak force and the corresponding peak-to-peak displacement in the same period T. This allows to determine the time history of the specimen stiffness during loadingBack to article page