Michael Parkinson has said he had to learn to walk again after undergoing back surgery.
The 82-year-old chat show veteran, who battled prostate cancer in recent years, said he is able to "stagger around", and that his mind is still sharp despite his physical condition.
He told The Sunday Mirror: "I've been ill for the last five years. I've overcome prostate cancer, but it's been a difficult period of my life. And my spinal operation has involved a long and unpleasant recovery.
"But in many ways what gets me through is the thought of not becoming redundant. I don't want to be on the waste heap - and that more than anything else is the best motivation for anyone growing old."
Michael said his surgeon came to him around two months ago and insisted that he perform an operation on his spine after having "kept the inevitable at bay" for 11 years.
"So we did it, and it's been successful, but you have to learn to walk again for one thing when you've had all that," he added.
"I'm still not too great on my feet but I can stagger around and do my work and there is nothing wrong with the mind."
The broadcaster was diagnosed with prostate cancer in 2013 and was given the all-clear in 2015, and he said he does not "take a pessimistic view of it".
He said: "Same with the spinal operation. I knew it wasn't going to be pleasant, but I knew I wasn't going to bloody die of it. I hope not anyway."
Michael said: "A lot don't do that and leave it too late. I know a couple of people who waited too long. You've got to get it checked because it is not a pleasant experience. Even if you survive it, there are still ramifications."
