Instrumented gait analysis (GA) systems offer objective evaluation of the effectiveness of the various rehab. treatments that are aimed at improving gait disabilities. There are 4 sections: clinical observation; review of the instrumental GA systems; the value of info. resulting from instrumented GA from the perspective of a psychiatrist, an orthopedic surgeon, and a physical therapist; and discussion of future trends for gait labs. The authors are experts from multiple rehab. specialties to give you an understanding of how GA can be used to evaluate a person's walking abilities to maximize function and maintain or improve quality of life. Illustrated.