Các hành động đi bộ liên quan đến sự tương tác phức tạp của các lực lượng cơ xương, quay qua nhiều khớp, và các lực lượng vật lý mà hành động trên cơ thể. Đi bộ cũng yêu cầu điều khiển động cơ và phối hợp động cơ. Nhiều thủ tục phẫu thuật chỉnh hình được thiết kế để cải thiện đi lại bằng cách tối ưu hóa lực lượng doanh, | A Practical Guide to Gait Analysis Henry G. Chambers MD and David H. Sutherland MD Abstract The act of walking involves the complex interaction of muscle forces on bones rotations through multiple joints and physical forces that act on the body. Walking also requires motor control and motor coordination. Many orthopaedic surgical procedures are designed to improve ambulation by optimizing joint forces thereby alleviating or preventing pain and improving energy conservation. Gait analysis accomplished by either simple observation or threedimensional analysis with measurement of joint angles kinematics joint forces kinetics muscular activity foot pressure and energetics measurement of energy utilized during an activity allows the physician to design procedures tailored to the individual needs of patients. Motion analysis in particular gait analysis provides objective preoperative and postoperative data for outcome assessment. Including gait analysis data in treatment plans has resulted in changes in surgical recommendations and in postoperative treatment. Use of these data also has contributed to the development of orthotics and new surgical techniques. J Am Acad Orthop Surg 2002 10 222-231 Locomotion is an extremely complex endeavor involving interaction of bony alignment joint range of motion neuromuscular activity and the rules that govern bodies in motion. Congenital deformities developmental abnormalities acquired problems such as amputations or injuries from trauma and degenerative changes all can potentially contribute to diminution in gait efficiency. Before radiologic studies are made or a therapeutic intervention is undertaken however a systematic evaluation of a patient s gait should be done. Through this approach the treating physician can understand the nature of the gait problem gain insight into the etiology and evaluate treatment options. Gait analysis is the best way to objectively assess the technical outcome of a procedure designed to improve gait.
