The best way to prevent sprains or strains is to keep yourself in good physical shape -- with regular stretching and strengthening exercises -- so that your muscles, ligaments, and tendons are strong and flexible enough to resist trauma. To prevent recurrent injury, ask your doctor or physical therapist for exercises designed to rehabilitate the muscles in the injured area.
You may benefit from a brace to protect the area while you are recovering from a recent injury. Use a brace for only a short period, because your muscles can get used to the support from the brace and weaken over time. If you're overweight, ask about an appropriate diet and exercise program to get closer to your ideal weight.
Frostbite is initially diagnosed based on symptoms and a physical exam.
Various imaging techniques may be used to determine the severity of tissue damage three to five days after re-warming.
After one to three weeks, imaging may also be used to help evaluate the condition of any potentially damaged blood vessels and to identify severely frostbitten areas that may need to be amputated.