[Development of the vascularisation in ossicula trans- and implants (author's transl)].

The revascularisation in 30 rabbit incudes after autogenic transplantation and allogenic implantation as well as in 5 mallei of the calf after xenogenic implantation was investigated. Prior to allogenic implantation the ossicles had been treated in five different ways: 5 ossicles had been cooled down to - 20 degrees C or to - 196 degrees C respectively, 5 others had been treated with cialit (1:5000) and 5 had been freeze dried with subsequent gamma-irradiation. In the last five collectives during the process of revascularisation the sprouting tissue of the host follows the bony canaliculi of Havers. It either forms normal capillaries or it leads to a widening of the bony canaliculi of Havers; in this case capillaries with larger diameter predominate. In the ossicles after xenogenic implantation, however, a still persistent antigenic reaction causes a hyalinisation of the capillary walls with considerable reduction of their inner diameter.