Any one here had one? Wondering what its like. Not bothered about post op all that much but a year later etc... Feels good? Done my knee again and going in for my 4th Op. 1st was ACL but all the others are cartilage damage and now arthritis. Not even 50 yet! Surgeon has said I need a new one and I tend to agree, I'm seldom without pain and limp a fair bit. Any of you bionic boys happy with the Steve Austin approach?