This book has been written for all those who are interested in the use of exercise to promote physical rehabilitation. It is, however, primarily designed to provide students training in physiotherapy with a simple theoretical background for the practical instruction they receive in the performance and use of movement and exercises for therapeutic purposes. New and widely varying techniques are constantly being developed and no one of these can claim to be suitable for all patients or all physiotherapists. A sound knowledge of basic principles, an open mind and a spirit of enquiry are essential to progress and the discovery of the methods most suitable to achieve results.