Ozzy Osbourne has cancelled his remaining tour dates after falling and injuring himself at his home in Los Angeles.
The Black Sabbath legend announced the news on his Facebook page, revealing that injuries from his quad bike crash 16 years ago had been aggravated by the fall.
The 2003 ATV accident at his Buckinghamshire estate left him with a broken neck vertebra, six broken ribs and a fractured collarbone.
While the severity of his injuries is not yet known, Osbourne underwent surgery last month and remains under doctor's care.
"I can't believe I have to reschedule more tour dates," the 70-year-old said. "Words cannot express how frustrated, angry and depressed I am not to be able to tour right now,
"I'm grateful for the love and support I'm getting from my family, my band, friends and fans, it's really what's keeping me going.
"Just know that I am getting better every day... I will fully recover... I will finish my tour... I will be back!"
Most of Osbourne's tour dates - barring his festival appearances - have been rescheduled for 2020, with concert-goers original tickets being honoured on the new dates.