Rosenbach-Semon's law
The Rosenbach Semonsche law describes a regularity in the development of a vocal cord paralysis.
Due to a vocal cord paralysis caused by esophageal cancer described by Ottomar Rosenbach in 1880 , in which first an "adduction position" and later a " carcass adjustment " of the vocal cords was found and based on his own observations in vocal cord paralysis, Felix Semon published a law in 1897: "In organic progressive diseases of The roots and trunks of the accessorius , vagus and recurrence succumb to the dilator fibers earlier than the narrower fibers, or even exclusively. ” Semon assumes that the cause is greater sensitivity of the“ dilator fibers ”, the nerve fibers that control the opening of the larynx.
According to the "Rosenbach-Semon law", the median position of the vocal cord corresponds to an incipient paralysis, which first affects the particularly sensitive cricoarytaenoideus posterior (short: M. posticus) or the nerves supplying it. As the paralysis progresses, the glottic closers are also involved, which results in an intermediary position of the vocal cord as an expression of complete paralysis.
The findings in patients after strumectomy , in whom a permanent paramedical position is not infrequently found as a complication, as well as attempts to sever the vagus nerve at various points contradict the "Rosenbach-Semon law", which is no longer considered valid today.
swell
- ↑ cit. according to Josef Jeschek: theory and clinic of vocal cord paralysis . In: Archive for Ear, Nose and Larynx Medicine , Vol. 162 (1953), p. 237, ISSN 0372-8978 .
- ↑ Julius Berendes : Recent results on movement disorders of the larynx : In. Archive for ear, nose and throat medicine, united with the journal for ear, nose and throat medicine , vol. 169 (1956), pp. 1–172.
- ↑ G. Hofer, Josef Jeschek: Paralysis of the recurrent nerve in humans . In: Journal of Ear, Nose and Throat Medicine , Vol. 45 (1940), p. 401.