I tore my acl and had damage in both of my meniscuses of my right knee at the end of 2010. I had surgery and my acl was repaired and I believe my meniscus was either taken out or repaired. Its two years later and even though I dont have chronic pain or anything I spend alot of time at home and havent been doing much exercise. If i walk at a mall for 30 minutes or any type of brisk walking I have stiffness and swelling in my knee the next day. What can this be?View Thread