This book deals with a major issue in the field of rehabilitation medicine that is how to improve injured patients gait. The book is well organized, starting with normal gait, and the implications of Drop-Foot on walking performance, especially among stroke and MS patients. Then, the author surveys the different therapeutic approaches, including the more sophisticated one with FES technique. Following the theoretical background, a detailed description of the study is provided. The uniqueness of this study lies in its design, where the laboratory conditions mimicked out-door conditions, such as even versus uneven ground, as opposed to other studies that have looked at in-door conditions. Surprisingly, the FES apparatus impacted more on the walking performance outdoor than indoor. The very idea of using a laboratory setting to mimic the real life world looks very attractive, as it reflects the fundamentals of rehabilitation medicine.