"Despite my focused efforts for the last five weeks to get 100 percent healthy, I made the decision on Sunday that I just can't be ready in time to compete in Berlin," Stuczynski said in a statement released by her management company Global Athletics & Marketing Inc.
The American record holder was only beaten by world record holder Yelena Isinbayeva last year at the Beijing Games to settle for a silver, while another Russian pole vaulter Svetlana Feofanova earned the bronze.
Earlier, Feofanova, with a leg injury, also declared to pull out of the Berlin athletics worlds, slated on Aug. 15-24.