[The value of sonography in assessing bone transplants--an experimental study].

The ultrasound control after spongiosa substance plasty is, as described, a supportive method to x-ray measurement. The clinical experience and results are most encouraging. Therefore an experimental proof of this method is necessary. The model is the complete lower leg after amputation. The tibia is prepared with autologous and homologous spongiosa substance with and without gradual decalcification. For fresh spongiosa there is an ultrasound examination from three to five mm and to a higher rate for decalcified spongiosa substance. The experimental results are the verification of clinical assessment.