I remember having my leg in a cast for a month when I had knee reconstruction. They gave me a huge rubber thing to put my let in & taped it around the top so the water couldn't get in. My orthopedic surgeon wouldn't let me walk on that leg for 3 months (no pressure at all for fear the staple would pull out).....so I lived in a brace for the rest of the time which needed to be covered while showering. I couldn't have gone 3 months without a shower. It wasn't easy standing on one leg in the shower, but I managed.