I have had 3 TKR and I used the ice machines but would use small water bottles frozen instead of ice, always having back up ones in freezer, Also one device that I can not imagine not having , it is a long strap with a loop at each end , so you can grip it with your hand and the other end goes over your foot so you can easily lift ypur leg in and out of bed or a chair. Not sure what clinical name is but it is a must. This thing was my best friend until my quad muscle was ready to take over . BEST OF LUCK