In January 2010, Johnson tore her left ACL while skiing. She had reconstructive knee surgery the following month.
In May 2010, Johnson announced her return to gymnastics training with a goal of making 2012 U.S. Olympic team.
In August 2010, Johnson communicated that her knee recovered to allow full training and that she had learned a new difficult skill.
In September 2010, Johnson released videos showing the following skills (training status):
- Yurchenko 2.5 "Amanar" (into pit)
- Yurchenko 2.0 (into pit)
- Uneven bars
- double twisting double layout dismount (into pit)
- toe-on full pirouette, connected to Geinger salto
- Floor exercise
In November 2010, Johnson entered her first post-Olympics National Team Training Camp. Although she had expected to return to the "ranch" later in her comeback, based on the demonstrated progress in her video, Martha Karolyi requested that she appear sooner. Johnson mentioned that her reconstructed knee still hindered high training volume.
In February 2011 Johnson became an official member of the USA Senior National team once again which allowed her to compete in international competitions. She stated that she wished to return to competition later in 2011.
In September 2011 Johnson was named a non-traveling alternate to the 2011 USA Women's World Championships Team.
In October 2011 Johnson was named to the 2011 Pan American Games Team. She won a gold medal in the team competition and also a silver medal for her performance on the uneven bars.
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