It's been almost 2 years for me....knee still gets really sore and stiff. I do have a ROM of 115 or thereabouts and my flexion is like 1 but....I have found if I exercise more it really bothers me. I do ride a bike a few miles a day and I do leg lifts to strengthen my hamstring and thigh muscles. It's a process for sure. Have had a genicular nerve block (insurance didn't cover), CT scan, no infection anyplace or fluid...it's a major surgery and it takes some people way longer and I feel I am one of those people sadly.