I think I lasted close to 10 years after my medial meniscus surgery before I needed the total replacement. The arthritis had gotten progressively worse over time. Synvisc and cortisone injections after about 5 years, then even they weren't very effective.

PT is your friend.

The desert is a true treasure for him who seeks refuge from men and the evil of men.
In it is contentment
In it is death and all you seek
(Quoted from "The Bleeding of the Stone" Ibrahim Al-Koni)

member of the cabal of dysfunctional squirrels?