Dynamic behavior of bone-implant substitute systems. Numerical and experimental study

In this paper, a study of substitute systems of an implanted bone was presented from the point of view of elaboration of a method for diagnosing the state of integrity of the bone-implant attachment based on vibrational techniques. Dynamic parameters of the systems were eshablished as sets of eigenfrequencies/resonance frequencies using numerical procedures and experimental modal analysis. The shifts of values of the parameters were discussed in relation to the loosening of contact between the bone and implant. The numerical and experimental results were compared and their consequences for application of vibrational techniques to real anatomical systems discussed.