Arthritis is a ***** !

I was hit head on by an 80 mph drunk in '72. shattered my left kneecap and cut the tendons into. I know one leg is slightly shorter. I have no real pain, but I have NO strength in my legs. I can hardly get back up after getting under my cars. is this a sign of bad joints. looks like if so, they would hurt!
only problem I have is ( according to doc), a piece of cartlidge will come loose in the joint. then I can hardly stand or walk for 5 minutes or maybe 2 days. seldom happens.

I have no desire for joint replacement till I have no other choice!