Abstract
This study was investigated the effects of the adolescent idiopathic scoliosis on dynamic trunk motion using ultrasound-based motion analysis system. 15 subjects were participated in this study and divided into three groups according to the curve direction. Experimental procedure was divided into two sections: initial position, and left/right lateral bending position. To analyze the alteration of the trunk motion, ultrasound markers was represented the segments. There were significant differences in angle variation between left and right side during lateral bending for the scoliotic groups. In addition, angle differences between left and right side were decreased gradually according to the regions of scoliotic curvature. From these results, it was concluded that the direction and region of the abnormal lateral curvature can influence on dynamic trunk movement and postural balance. Furthermore, ultrasound-based motion analysis system can be utilized to detect asymmetrical balance and dynamic postural change of idiopathic scoliosis patients in adolescence.
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