Ottomar Rosenbach

Ottomar Ernst Felix Rosenbach ( born January 4, 1851 in Krappitz, Silesia, † March 20, 1907 ) was a German physician.

Rosenbach was in the same place as his father, Samuel Rosenbach, a general practitioner. He studied at the universities of Berlin and Breslau. His studies he interrupted to participate as a volunteer at the German -French war. In 1874 he finally completed his studies with the Medical Doctor degree. From 1874 to 1877 he was assistant physician at the University Hospital in Jena, from 1878 assistant professor at the All Saints Hospital in Wroclaw. In parallel, he taught as a lecturer at the University of Breslau. In 1887 he was Medical Director of the hospital, where he stayed until his retirement in 1893. From 1888, he also served as an assistant professor. In 1893 he resigned his professorship and moved back to Berlin.

Rosenbach's observations on vocal cord paralysis caused by esophageal cancer were extended by Felix Semon and led to the formulation of the 1897 Rose Brook Semonschen law, but which is considered obsolete today.