At the end of the year, northern-country snow resorts are covered with silvery snow, and they are undoubtedly a dreamland for ski lovers.  The colder the day, and the heavier the snow, the greater enthusiasm the skiers have.  This just tells you how attractive and charming the snow resorts are.  However, every snow season, this popular fitness event also brings out a cruel reality: pain and injuries.  Recently, a ski enthusiast with a fever visited Dr. Chen’s Physical Rehabilitation Center.  This gentleman accidentally fell and sprained his knee while engaged in the popular and safe snowboarding.