Heck with 10 years...try 2 to 3 years on Arthritis....my knee is hurting now....I had a total reconstruction of the ACL in 2001 and wasn't able to be fully released until about a week before the first tournament in 2002. I was hurting...for like the first month I was on crutches and had a machine that bent my leg for me (that sucked!) My knee would rotate and it would bend not like it's supposed to...make sure you do your rehab a.s.a.p.