Ozzy Osbourne has spoken with Rolling Stone about his recovery from an injury he sustained while coming back from his recent bout of pneumonia. Ozzy fell at his Los Angeles home, aggravating years-old injuries from an 2003 ATV accident that required surgery.

The Black Sabbath singer explained, "For the first, say, four months, I was absolutely in agony. I was in agony beyond anything I ever experienced before in my life. It was awful. I'm taking physical and occupational therapy classes, but the progress is very slow. They say it's going to take at least a year. I'm hoping that I'll be okay and ready to go by January. I'm really keeping my fingers crossed."

Ozzy had surgery on his spine and neck, saying about his stay in the hospital, "I cannot describe to you the helpless feeling that I had. I had to use (a walker) to go for a pee. I had to have nurses, day and night. Just being in hospital is enough to drive you nuts. I thank God I didn't paralyze myself when I had that accident. I wouldn't be here now. I would have jumped off the f**king roof -- or fell off the roof, whatever."

Since his latest accident, he has developed blood clots in his legs and is now on blood thinners. He remarked, "It's scary stuff . . . From 40 (years old) to 70 was okay and suddenly you get to 70 and everything caved in on me."

The Ozz told us a while back that he never imagined being around this long: "Let me tell you, when I was 20 I was going, I'd go, 'I'm gonna die by 40.' And that was all right until I was 39 and a half."

Ozzy postponed all his 2019 tour dates as a result of the fall, with plans to resume his "No More Tours 2" trek in January of next year. He is hopeful he can make it, saying, "We're just keeping our fingers crossed. It's like making a sculpture. You chip away at it and it turns into this thing. You have to resculpture your life again."

AUDIO: OZZY OSBOURNE ON GETTING OLDER