A device for determining the individual breaking load mechanically stressed of human bones, with which, by means of an acoustic pick-up''s the case of a load of the bone and noises occurring are fed to an evaluation electronics, characterized in that the sound recorders for mounting on the skin of the people in the region of the body part is designed to be examined and the electronic evaluation unit for determining the individual breaking load of the person by means of evaluation of the noise is formed which, in the case of the loading of the bone by means of the tested person as a result of formation of cracks occur, the test load f is applied to the bone under the cracking limit the cortical substance, respectively, since as a load limit the formation of cracks in the transition region compacta / spongiosa is used, and wherein the evaluation circuit discrete acoustic events with the aid of the function I = io·D–nto be characterized, in the i the number of signal amplitudes exceeding the threshold d and n is a measure for the decay behavior of a is an.
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