This application has been developed for physicians as a medical education tool. It is an interactive anatomical atlas of the head and neck muscles related to Cervical Dystonia. You can find on one part an atlas of the head and neck muscles with different way to find each muscle (by name or by location) with some information for each muscle (insertion, function, nerve supply). On the other part of the application, you can see the muscles involved in the different forms of Cervical Dystonia. This application is for health care professional only.