London • Injured BMX rider Arielle Martin of Cedar Hills has had three surgeries to treat life-threatening injuries suffered in the training crash that kept her out of the London Olympics, her mother said, and won't be able to travel here for the closing ceremony Sunday as she had hoped.

"The doctors have made it clear that flying is simply too dangerous at this point, and especially with a trip that long," said Lori Woodard-May, in an email to media outlets that have covered the story.

Woodard-May said there is no scheduled released date for Martin, the 27-year-old Lone Peak High School and Brigham Young University graduate who would have been a medal contender in BMX racing this week had her chain not broken during her final training run July 30 at the U.S. Olympic Training Center in Chula Vista, Calif.

Martin suffered a severely lacerated liver and collapsed lung in the resulting crash.

Woodard-May said her daughter's latest surgery to treat the injuries "appears to be working well, but she has experienced an additional setback by developing pancreatitis."

"While devastated and heartbroken that she is unable to compete in London," Woodard-May wrote, "she is still optimistic about her recovery and already making plans return to the sport. Arielle loves the Olympics and has been watching and cheering the events on from her hospital bed. She is proud of her BMX teammates and wishing them the best as they begin competition."

Brooke Crain, the 19-year-old rider who replaced Martin at the last minute, crashed during her seeding race Wednesday at the BMX Track in the Olympic Park. She is still expected to race the semifinals on Friday, but she will occupy the last starting position.