I`m going on 67, and was told I needed knee replacement 10 years ago.
Still have my knees. I get a cortisone shot , maybe once every 2 two years, but I get Orthovisc injections in both knees twice a year (series of 3 shots each time).
https://www.anikatherapeutics.com/pr...ics/orthovisc/
Between the shots and riding, I`m hoping to die with my own knees.
Good luck in whatever you decide.