Musculoskeletal disorders of the upper limbs, often known as repetitive strain injuries (RSIs), are a major and increasing problem in the workplace, and a significant cause of sickness absence and even permanent disability. This is a global problem affecting people of all ages and backgrounds, particularly in the manufacturing and service industries, in agriculture, and in the ever-expanding area of computer use. This is not a comprehensive medical textbook and is aimed at non-specialist medical practitioners, students, healthcare workers and lawyers working in the medico-legal field. The avoidance of medical jargon, the provision of a comprehensive glossary, and the inclusion of case histories will allow the book to be of help to a wider audience.