During the year, more than 1.9 million runners break at least one bone, and approximately 50% of them suffer injuries that permanently prevent them from participating in sports. Despite the widespread occurrence of motion-related injuries, most practitioners continue to rely on outdated and ineffective treatment protocols, with an emphasis on passive interventions such as anti-inflammatory drugs and complete deactivation of the affected limb. With over 1,000 references and 530 in-depth illustrations, this human movement book offers a logical approach to examining, assessing, treating, and preventing gait cycle injuries.