About Karin Büttner-Janz
Karin Büttner-Janz is a German medical doctor and former gymnast who won World and Olympic gold medals in artistic gymnastics for East Germany. She is co-inventor of the first artificial intervertebral disc, and from 1990 to 2012, she was chief physician of clinics in Berlin, Germany. She has a foundation named Spinefoundation. Karin Büttner-Janz (née Janz, born 17 February 1952) is a German medical doctor and former gymnast who won World and Olympic gold medals in artistic gymnastics for East Germany. Büttner-Janz has an uneven bars element named after her, the Janz Salto, which she first performed in competition at the SV Dynamo Spartakiade in East Berlin, 1971.
Biography source: Wikipedia. The profile adds birthday-specific historical context from the Celebs Birthday Today editorial database.