In 1990, Büttner-Janz moved from the Charité Berlin to the orthopedic clinic of Berlin-Hellersdorf, in 2004 to the Vivantes clinic of Berlin-Friedrichshain.
Büttner-Janz's career path involved a change in 1990, when he moved from the Charité Berlin to the orthopedic clinic of Berlin-Hellersdorf, and again in 2004 to the Vivantes clinic of Berlin-Friedrichshain.