UDO DIRKSCHNEIDER Uses Walking Cane While Performing On 'Monsters Of Rock' Cruise (Video)

Fan-filmed video footage of U.D.O., the German heavy metal band fronted by former ACCEPT singer Udo Dirkschneider, performing aboard the ninth annual Monsters Of Rock cruise, can be seen below.

Udo used a walking cane for support during the Monsters Of Rock concert after recently dealing with a "serious health" issue.

The former ACCEPT frontman, who turned 66 last April, reportedly couldn't walk at all for an extended period after experiencing pain in his left knee. He later ignored doctors' advice when deciding whether to return to the road and joined his bandmates as they kicked off a European run of headlining shows on January 20 in Madrid, Spain.

In a 2018 interview with Minnesota's "The Five Count" radio show, Dirkschneider said that he had no thoughts of slowing down. "I like to be on tour," he said. "I like to make new albums and, you know, it's like I always say, as long as I have fun and my voice is working and people come to the shows, I don't know, maybe I can do this for another 10 years or whatever. I don't know. At the moment, there is no thinking of retiring or stuff like that."

Although it has been reported that Dirkschneider suffered a heart attack nearly 30 years ago, he told Metallian that the reality was a bit different. "Around 1990, I had — what is the word — a body breakdown and not a heart attack. I was overworked, singing, recording, writing songs, producing and even being a manager. I was working on other albums. It was too much. It was not a a heart attack. I remember the reports. I don't know where the report on a heart attack came from. In a way, I am lucky. I have never had a problem with my voice. I have managed to stay healthy. I also stopped smoking [in 2003]. Especially, while on tour, you have to do your best to stay healthy. I always say that I am lucky, I am very lucky. Of course, we get drunk sometimes, but I never party or take drugs or something like that. I have always been a healthy man."

U.D.O.'s current lineup includes Udo's son and drummer Sven Dirkschneider, bassist Tilen Hudrap and guitarists Andrey Smirnov and Dee Dammers.

Bassist Fitty Wienhold, who joined U.D.O. in 1996, announced his departure from the band in September, saying in a statement that he "decided to take a new way" in his life.

U.D.O.'s latest album, "Steelfactory", was released in August via AFM.