On January 22, his agency�Daydream Entertainment�confirmed, "Ma Dong Seok has traveled to the United States to receive professional treatment in the area he injured in the past. He plans to come back immediately after completing treatment in mid-February."

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It's revealed that Ma Dong Seok injured his shoulder and arms in the past, and had to continuously receive shots and painkillers during filming.�Meanwhile, the actor recently took part in the successful film 'The Outlaws' and is scheduled to hit the theaters soon with 'Along With the Gods 2', 'Dumb Bear', and 'Champion'.�