Ozzy Osbourne will undergo a "major operation on Monday," according to his wife Sharon, who briefly spoke about her husband's difficult surgery during a recent appearance on her UK chat show Talk TV.

The 73-year-old Black Sabbath singer has battled neck problems for nearly two decades following a quad biking accident, but the nature of the specific medical procedure he needs remains unclear.

"He has a major operation on Monday, and I have to be there," she told her fellow panelists. "It’s really going to determine the rest of his life."

Sharon, who will celebrate her 40th wedding anniversary with Ozzy in July, admitted she had to fly back to Los Angeles to be by her husband's side for the surgery.

"I’m just waiting on some more surgery on my neck," he told Classic Rock magazine in May.

"I can’t walk properly these days. I have physical therapy every morning. I am somewhat better, but nowhere near as much as I want to be to go back on the road."

When asked if he ever thought about his own mortality, Ozzy said he felt optimistic about his future as he looked back on the past.