Olympic champ Shawn Johnson injures knee

DES MOINES, Iowa (AP) - Olympic gold medalist Shawn Johnson is recuperating after injuring her left knee while skiing in Colorado on a family vacation last month.

Her father, Doug Johnson, says the injury happened on her last skiing run of the day, and the injury will keep her from competing for six months.

Johnson's agent, Sheryl Shade, says the West Des Moines gymnast underwent an arthroscopic procedure last Tuesday. She says the 18-year-old Johnson has started physical therapy and will be in a leg brace for six weeks.

Shade characterized the injury to Johnson's ACL as minor. She says because Johnson wants all of her options available to continue in gymnastics, the decision was to have it repaired.

Johnson won the gold medal in the balance beam during the 2008 Olympics in Beijing.