Let's see, I've had both knees scoped twice. Last a year ago. At that time Doc told me my next appt would be for new knees. I do use an Amazon bought neoprene knee sleeve on each knee, with Velcro straps to make it tight. Generally on long days on my feet.
I have a worn out back, and have good meds for pain & inflammation. They also help out the knees too.
Trying to loose weight and put off new knees as long as I can.