The Japanese single-shooter Yuzuru Hanya was injured during a training session before a random program at the final stage of the Grand Prix in Moscow, reports RIA Novosti.
As Russian coach Alexei Mishin, who was present at the training, said that the 23-year-old Japanese blasted the leg after performing quad rittberger.
"Such falls with landing on the front are dangerous just because you can easily damage your ankle," said Mishin.
After the short program, Hania Grand Prix in Russia is leading a world record (110.53 points).
Earlier it was reported that Hania talked about the connection of his ice skating with Russian traditions.