In 30 Kaninchenambossen nach autogener Transplantation und allogener Implantation sowie in 5 Kalbshammern nach xenogener Implantation wird die Gefal3entwicklung aufgezeigt. Der allogenen Implantation ging als Konservierung die Tiefgefrierung auf-200 C oder-196°C, die Einbettung in Cialit®(l :5000) oder die Lyophilisierung mit gleichzeitiger-Steriiisierung voraus. Ebenfalls lyophilisiert und-steri1isiert wurde das xenogene Spendermaterial (Kalbshammer). Bei derRevaskularisierung in den autogenen Transpiantaten und allogenen Implantaten folgt das einsprossende wirtseigene Granulationsgewebe den knöchernen Haversschen Kanälen und führt hier entweder zur Ausbildung regeirechter Kapillaren oder infol
According to the majority of cases under observation the following anomalies could be found: extended, separated or manifold developed crura of the stapes, reduction in the circular windings of the cochlea down to 1 1/2 with a normal development of Corti's organum, reduction of the nerve structures of the nervus cochlearis to a munimum and an open facial canal.
The introduction in the 60' s of the Nerve Excitability Test (NET) by Laumans and Jongkees for the diagnosis of Bell's palsy stimulated an interest of quantitative testing of the facial nerve. In 1970 Yanagihara reported the Evoced Myography (EMG; i.e. NET is combined with EMG). Starting with electrophysiological basis of the impulse spread of peripheral nerves May, in 1971, extended this concept by including supraliminal stimuli, i.e. Maximal Stimulation Test (MST), for diagnostic purposes. This method eventually developed into what is known as neuronography (Esslen, Huffmann, Ehrenberger, Satoh). It is undoubtedly a refinement in the question of prognosis of Bell's palsy. Continuing the original concept of May we have developed an electronic device with which to carry out automatically the neuronography that demonstrates an evaluation on a numeric display. We use the conventional bipolar negative square wave for a 1 ms stimulation. We stimulate the angle of the mandible, where the ramus marginalis can be readily found in all patients. Neuronography and Evoked Myography provide earlier a more precise prognosis of facial palsy than Nerve Excitability Test (NET). We developed an electronic device for the Maximal Stimulation Test (MST) of May, M., that is automatic. The device counts the spikes of the evoked myogram. A time window is related to the stimulus to exclude stimulus noise and background muscle noise from the counter. Only spikes seen in this window are processed. The number of spikes generated per stimulus is the measurement of the live axons in a stimulated nerve.
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