Hi there …. yes, I’ve had scar tissue develop also. It developed slowly over time, but by the time I hit the 1 year mark, my surgeon went in – arthroscopically – and cleaned it up. But, it never was right, and in another year I had to have a revision – a totally new replacement. Since then, my knee could not be any better. I don’t know why this happens to some and not to others … but after several other options had been tried, including the arthroscopic surgery, I opted to just do the revision …. I’m glad I did.