Olympic champion McKayla Maroney has fractured tibia from fall during gymnastics tour

U.S. Olympian McKayla Maroney visits the USA House at the Royal College of Art on August 7, 2012 in London, England. / Photo by Joe Scarnici/Getty Images for USOC

(AP) INDIANAPOLIS - Add a fractured tibia to Olympic champion McKayla Maroney's injuries this summer.

Maroney fractured her left tibia Sunday when she fell on her uneven bars dismount during the second stop of a 40-city gymnastics tour. USA Gymnastics said Tuesday that her leg is in a brace, and she and her family are consulting with doctors on treatment. It's not certain when she'll return to the tour.

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McKayla Maroney

Aly Raisman, who bruised her knees in a separate fall off bars, is expected to return this weekend. The tour resumes Thursday in San Diego.

It's been a rough few months for Maroney. She missed the second day of the U.S. championships in June because of a concussion and a nasal fracture, and competed in London despite a break in her right big toe.