My husband had a total shoulder revision. He is not a fan of ice packs that he has used in the past. His Dr recommended an iceman machine which we never heard of so thought we would purchase one. It has been a blessing. My husband actually wants it on his shoulder. The coldness takes away a lot of the burning he has. We are only on day 2 1/2 of using it. We have heard nothing but good things on the iceman machine. We would highly recommend it to any one getting surgery. Thank you so much