Abstract:Objective Exploring the spine and pelvic kinematics characteristics of adolescent idiopathic scoliosis (AIS) patients with different curves during standing and walking, and providing reference suggestions for rehabilitation body training. Methods The physiological curvature of spine and pelvic parameters of 45 patients with single curve and 45 patients with double curve and 27 healthy adolescents were measured in standing and walking state using Diers 4D motion module. Results The thoracic angle and lumbar angle in the healthy group in static standing position is the largest, the thoracic enlargement angle in the double curve group is the largest, and the thoracic curve enlargement angle in the healthy group is the smallest; the rotation direction of the pelvis in the scoliosis group is the same as that of the main curve, and the inclination direction of the pelvis in the single curve group is the same as that of the main curve. Conclusion Compared with the standing position, the movement trend of thoracic angle in the three groups during walking is mainly reduced, and affected by the scoliosis curve;The lumbar angle decreased in all groups; The three-dimensional shape of the pelvis in the static standing position of the scoliosis groups is affected by the lumbar compensatory, and the dynamic rotation function of the pelvis during walking is related to the lumbar compensatory and the initial position of the pelvis.