David Butler presents an innovative examination and treatment concept for physiotherapy practice. The Australian author describes for the first time the clinical consequences of the phenomenon of neural antagonism, which can occur with injuries to the nervous system and may be responsible for many symptom patterns previously attributed solely to orthopedic causes. The reader will become familiar with a comprehensive set of practical tools: tension tests, as known from passive mobilization, are used in a refined form and supplemented by new testing methods. Beyond diagnosis, they are also applied in the interpretation and treatment of diseases.