Not really scared, just hesitant. I had my hip done 4 yrs ago and I was in significant pain so the decision to get it done was easy. Prior to tweaking my knee I had no chronic pain and I still have no chronic pain, just the occasional zinger when I move laterally too quickly so my motivation to replace my knee is minimal.
Also contributing to my hesitance is my sister had her knee done 20+ yrs ago. It wore-out and another prosthetic was put in place but it was defective (came out of joint easily) so it was replaced with another prosthetic. Somewhere along the way recently she contracted a fungal infection and nothing worked to beat it down and she had to have her leg amputated mid-thigh.
it's just a bad time for me to even consider knee replacement.