Hello, I initially noticed my tightness a couple of weeks into my physical therapy but the initial pain itself was right after my surgery probably just a day or two. I knew something felt wrong. The tight band feeling felt like 100 rubber bands wrapped around the middle of my knee with a brick strapped to it. As it worsened, it felt more like 1000 rubber bands wrapped around the middle of my knee with a concrete block strapped to it. My initial OS never saw a problem which is why after four years of pain, I found a knee revision specialist who discovered my problems during an x-ray. My original surgery was February 21, 2019 and my revision surgery from a different surgeon altogether was on June 28, 2023. I hope this helps. Best of luck to you.