Physical medicine and rehabilitation is the sub-field of medicine that deals with the enhancement and restoration of functional ability and quality of life of those with physical disabilities and impairments. It is also known as physiatrics and physiatry. This field deals with restoring optimal functioning of injured muscles, ligaments, bones or nervous system. It is used to treat spinal cord injuries, amputation, traumatic brain and other debilitating injuries. The field is majorly concerned with the functioning of disabled part of the body for which there is no known cure. It uses the process of goal setting to treat a person undergoing rehabilitation for an acquired impairment. Some of the subspecialties within this field are pain medicine, sports medicine, neuromuscular medicine, pediatric rehabilitation medicine, and hospice and palliative medicine. This book provides comprehensive insights into the field of physical medicine and rehabilitation. It is an upcoming field of medicine that has undergone rapid development over the past few decades. This book is a complete source of knowledge on the present status of this important field.