Doctors removed four small pieces of bone from Liu's right foot during an hour-long operation which is the athlete's first. The injury occurred over time, resulting in microscopic tearing of the tendon's fibers, which caused the bleeding.

Sun said Liu will not go through intensive trainings sessions immediately and will revise his workouts as per advise from the US doctors.

The coach also told the local newspaper that the 26-year-old hurdler will be kept away from the media glare.

China's top sports body, the General Administration of Sports, has also advised its staff to shun any talk over Liu's future, the report claimed.

Dr. Clanton, who also operated on NBA All-Star Yao Ming for a stress fracture in his left foot early last year, said Liu would recover fully in six months and will be ready to compete, and at the same level as before his injury.

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