WHEN DO YOU ICE AN INJURY
The answer to this question is not medical advice, and you should consult with a physician before attempting to treat yourself with ice or heat. Any injury should be evaluated by a physician. As a general rule of thumb, you should ice an injury that is acute, or fairly recent. For example if you fall and strike your knee you would apply ice, or if you strain your back after a day working in the yard, you would apply ice to the area that hurts. If you have chronic pain such as arthritis, heat may be appropriate.