Olympic gold medal gymnast Shawn Johnson has announced her retirement. The decision was made as a result of her recurring knee problems.

Here is part of the announcement from Johnson’s Facebook page:

“I still have the heart, drive, and desire to compete and help the USA at the London Olympics,” said Johnson, who also won two senior U.S. all-around titles. “Unfortunately, it has become obvious that my left knee is not able to sustain the demands of gymnastics any longer. All I can do now is gracefully retire and thank everyone who has believed in me and my journey.”

“I am announcing this now so the focus for the next three weeks will be on the incredibly talented gymnasts who are trying to make our 2012 Olympic Team,” said Johnson. “I have had the honor to train and compete with them, and I am excited to join the gymnastics family and fans in cheering them on to victory. I will be there with every ounce of pride and energy to cheer on my girls and Team USA.”

https://twitter.com/Aphill30/status/209373244770357248