> The joint at the base of my thumb started telling me it's 60 years old

This is my biggest apprehension. I've become quite a good guitarist, and I know that can't last forever. Getting my accomplishments in while I can.

Broke this one in a motorcycle accident and I'm really, really not looking forward to the late life implications of it.

I got surgery about 8 years ago, after 10 years of on/off knee pain that I ignored. I had locking in the knee so I needed to so something so I could walk. Surgery was fine, they opened me up and my meniscus was all stringy as if you cracked an egg in boiling water, so no fixing it and they cut off 50% of my meniscus. I recovered quite easily, stupidly did not do any formal physio but proceeded to do mostly moderately heavy lifting with some light running and cycling (very light cardio for the runners around, but still something compared to couch potatoes). Since about 2 years I have pain and a pressure in the knee, not very intense pain but more unsettling. Pain also seems to show up after some sort of activity threshold and the effort accumulates. I eventually took an MRI about a month ago, I have first to second degree condroathy. A couple of physio sessions seemed to help but I need to take the time to do a full physio cycle. I can't wait for cartilage Regen tech. It's very nice being physically active. Worst case, I use it until I can't anymore, do a knee replacement and after that fails hop on one leg as a pirate.

My hope to pull another 15 years of functional use out of it, enough to do fun activities with my son.