Together with Martina Voss and Silvia Neid, she is considered the most successful German women's footballer, having won seven national titles and six DFB trophies.

She was allocated to Philadelphia Charge and scored the team's first ever goal in a 2–0 win at San Diego Spirit on 22 April 2001.

Despite missing the final part of the season with a career-ending wrist injury, Fitschen was named WUSA Defensive Player of the Year.

At the 1989 European Competition for Women's Football, Fitschen was an important part of the team who claimed West Germany's first major trophy.

[3] Following her retirement Fitschen received a special achievement award from UEFA, for her outstanding contribution to women's football.