1. Cerebral birth injuries are described and the handicaps, both physical and mental, classified from an orthopaedic rather than a neurological point of view in order to facilitate therapy.
2. A neurological diagnosis is nevertheless essential in the survey of the patient in order to rule out other conditions which may be progressive.
3. A careful mental capacity evaluation must be made, taking into consideration the physical handicap as an added factor in determining the advisability of treatment.
4. Treatment is briefly outlined for the various types of dyskinaesia.
5. The use of slow-motion pictures is recommended as a great aid in distinguishing the various types of dyskinaesia encountered and as an aid in recording improvement.
6. Slow-motion pictures were shown illustrating the types described and comparative films as used for record.