Questions about total knee replacement surgery

My mom is a school teacher and had hers done over 5yrs ago. She would call me in the middle of the night in excruciating pain. After the surgery, she was pain free. Her surgery was sometime in June and she was able to start work on time when school started in August. The only advice I can give that's any different from previous posters is to find yourself a recumbent bike for home. This will work wonders for your ability to gain functional range of motion.