No more running, football, baseball, basketball, tennis, racquetball, soccer or any other activity that involves potential physical contact, running, jumping, sudden stops and starts and change of direction...puts too much stress on the artificial joint and its attachment to the bones... lotsa walking, hiking, cycling, swimming, fishing, hunting are good...
Primary benefits for having the knee replaced are pain relief, sleep w/o pain, reduction in the amount of nsaids consumed which helps keep the liver and kidneys healthy, and the ability to do non-contact activities that were impossible or too painful with the bad knee...
Good well soon Drafter...