Some Experimental Results concerning the Mechanical Coupling in Endoprosthetics

Abstract

The work continues and completes an earlier work (Gola and Gugliotta, 1982). The refined model of a special transducer-stem is here used, after implantation in a dry bone, for two purposes. First, to confirm a recent numerical finding which states a stress equivalence between physiological loads on a prosthesis-femur system and a simplified load condition, more desirable for testing purposes. Second, the separate effects of throchanteric muscle forces and of femural head forces on the stresses in the prosthetic stem are shown at various angles; superposition of effects compares well with the physiological loading case.