Central nervous system diseases cause the gait disorder. Early rehabilitation of a patient with central nervous system disease is shown to be benefit. However, early gait training is difficult because of muscular weakness and those elderly patients who lose of leg muscular power. In the patient's walking training, therapists assist the movement of patient's lower limbs and control the movement of patient's lower limbs. However the assistance for the movement of the lower limbs is a serious hard labor for therapists. Therefore, research into and development of various gait rehabilitation devices is currently underway to identify methods to alleviate the physical burden on therapists. In this paper, we introduced the about gait rehabilitation devices in central nervous system disease.

So far, a lot of lift walkers have developed to help patients. However, the use of the conventional lift walkers may change the walking posture and reduce curative effect. In this paper, the walk using the lift walker is analyzed and the method to support appropriate walk is suggested. First, the walk in accordance with graded weight is measured with 3D motion analysis system. Next, variation of velocity, step length, term, and each joint of walk are evaluated. Finally, the method which does not change the walking posture is proposed. As the result, it is clarified that the lift walkers obstruct the motion of hip, knee, and foot joint.

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