Hey everyone,Thanks again for the comments. It's great about everyone's experiences, and I enjoy hearing that other people like Dr. Cole as well. I'm posting to let you know that I can now do a pain-free straight leg raise (even though my rehab doesn't call for them for another week, at the 6 week mark), so that's something! Other than that, I just have a concern:When I'm on my back and doing heel slides, I often feel a catching sensation as I move my heel away from my body. Is this "catching" feeling normal with the knee/graft after ACI or something to be concerned about? I guess I may have read about a few people having this "catching" sensation from scar tissue, in which case I'd like to hear how you knew it was scar tissue.Feeling terribly paranoid as usual,Ben