If you can't go to the ground on the first day after surgery, the problem of going to the toilet will be completed in bed. The next day, the hospital will let you walk with braces and crutches, so you don't need a wheelchair. In the later interview, the most important thing is to practice your leg muscles, because your leg muscles will begin to contract. In addition, you need to practice your leg bending and stretching. Unless you are a professional athlete, there is no need to go to a rehabilitation center for physical therapy.