In the SBS entertainment program Running Man' broadcasted at 5 pm on the 8th, Yoo Jae-Suk said, "The Kwangsu was unable to perform surgery because of the ankle bone summit with the Acident last weekend."
About Running Man
Running Man is a South Korean variety show, formerly part of SBS' Good Sunday lineup. It was first aired on July 11, 2010.
Running Man was originally classified as an "urban action variety"; a genre of variety shows in an urban environment.
 Wikipedia