He said though he has returned performing on stage, he is still unable to bend two of his fingers after the unfortunate incident, reported Ace Showbiz.
"It feels like I have somebody else's hand. I can't bend these (fingers), and this is like rigor mortis," the Irish rocker said.
"But they say that nerves heal about a millimeter a week, so in about 13 months I should know if it's coming back. It's all numb here, and this is titanium. The shoulder's better, the face is better. But this is the hard bit because I can't play guitar. They (the band) don't seem to mind," he added.
Fellow band members Adam Clayton, The Edge, and Larry Mullen Jr announced the unfortunate news in a post shared on their website.