Articles like this have been comming out for a while now and I expect we will see a new wave of them in early 2008 ...
Any Physio or Ocupational therapist will tell you that there are thousands of conditions which are aided by repetative co-ordinated movements; the problem is that many of these conditions are also associated with physical limitations which could prevent someone from taking up Karate or Dance. Existing excercises are often boring and many patients progress is slowed because they simply do not 'feel' like doing their excercises. There have been attempts to create videogames for these patients before but the systems and hardware was generally too expensive for clinics and specifically for patients homes.
The Wii offers the benefits of being far more entertaining than most excercise routines, doesn't (necessarily) require a lot of physical motion, and can easily be purchased by clinics and paitents. Under the direction of a therapist a patient can easily be taught their excercises as motions that work in certain games ("Swing at the Baseball using one hand"), and it is heavily supported so you could customize the content to match the patients' interests (someone may prefer playing Zelda over Tiger woods);
Wii Fit could (potentially) take this to the next level as more lower body excercises can be worked into the routine ...
