Mick Foley announced earlier today on Twitter that he was undergoing surgery to get his right knee replaced.

He wrote, “I’m getting my right knee replaced in about five minutes! I’ll check back when I kick out of anesthesia.”

Foley, a Hall of Famer, also underwent hip replacement surgery in April, which was the catalyst for his being replaced as Raw General Manager to set up the current run by Kurt Angle.

Foley had been in tremendous pain last year and just traveling and getting through the airports to do his General Manager role on television had been extremely uncomfortable for him. He hasn’t been on Raw since being “fired” from the position by Stephanie McMahon as their storyline came to a close in March.

Before announcing that he was undergoing knee replacement surgery, Foley also wrote on Twitter that he’ll be appearing at WrestleCon in New Orleans over WrestleMania weekend next year.