The purpose of this study is to provide insight on investigate the effectiveness of vestibular stimulation on gait pattern by using spring gravity bar , when you bounce up and down it stimulate vestibular system that is considered straight line vestibular stimulation and strength extensor muscle of lower limb by pressure on spring during stance phase all that change gait stability and stride length so can improve gait pattern .
The purpose of the study is to determine the effect of spring gravity bar on gait pattern in children with spastic diplegia