Fig. 7From: Biomechanical properties of five different currently used implants for open-wedge high tibial osteotomyDefinition of permanent plastic deformation before and after failure (Maas et al. 2013): creep deformations of the specimens were observed. This allowed defining permanent plastic deformations before (UPB) and after failure (UPA) as the irrecoverable displacement with respect to the initial instantaneous displacementsBack to article page