Thank you for your time and insight it’s something I was hoping I would not face till I was very old. My knee has a great deal of scar tissue and the dr that did the injection commented on how hard he had to push. The knee has never been able to bend all the way since the accident. They were just trying to make sure I would walk again. I have done so much more than anyone thought I would. It’s been 12 years since my accident that got me into this mess. I am hoping knee replacement will go well with that fact I have been told this is a one time thing for me as I don’t have enough bone for a second replacement. Screw that goes through rod at top of knee is very close to the joint.