@twilli2822 I also had knee replacement in October 2025 and was doing great until about 3 weeks ago. Turned my knee and heard a loud pop and crack and was extremely painful. I couldn't see dr until a week later and by that time it had settled down but kept my appt. Dr. said it was scar tissue getting caught in the hinge of the implant and eventually it (scar tissue) would shrink but would take about a year. It wasn't hurting at the time but slight cracking when I straightened it. It has gotten progressively worse and now I have to ease my leg straight or a horrible cracking sound, somewhat painful, will occur. I feel like I am doing damage to my knee but I was pretty much dismissed by the dr, he said he would see me when the year was up. I am not happy, it took 5 months for this to show up, I was much better at 4 months, no pain. Is this similar to you and what kind of physical therapy are you getting?