Do you need an ice machine after a knee replacement? I vote 1000000% yes. During those first few weeks after surgery, you will need all the tools to help decrease your pain and swelling. The ice machine can be so beneficial for this. My favorite part about the ice machine is it stays colder than an ice pack and it stays colder for a longer period of time, which can be very important in those first few weeks after surgery. Many people use ice for several months after any knee replacement so the i