On the Jan. 29 episode of his Sirius XM show, "Ozzy Speaks," with co-host Billy Morrison, Osbourne, 76, admitted he was having problems walking but remained positive.

Ahead of Black Sabbath's farewell show, Sharon Osbourne shared an update on her husband Ozzy, stating the frontman's voice 'is as good as it's ever been.'

“He’s very happy to be coming back and very emotional about this," Sharon told The Sun. “Parkinson’s is a progressive disease. It’s not something you can stabilize. It affects different parts of the body and it’s affected his legs. But his voice is as good as it’s ever been.

Ozzy Osbourne has shared that his Parkinson’s disease has progressed to the point where he is no longer able to walk. The musician discussed his condition during his SiriusXM show, 'Ozzy's Boneyard.' He also told fans what they can expect from his final show,

Ozzy Osbourne has opened up about the recent Black Sabbath reunion announcement, sharing that although he’s unable to walk at the moment, he’s thrilled to be alive and is looking forward to taking the stage with his former bandmates one last time.