A theory for adolescent idiopathic scoliosis was proposed by Dr. Stokes [1] in which a lateral spinal curvature produces asymmetrical loading of the skeletally immature spine, which in turn causes asymmetrical growth and therefore progressive wedging deformity. There have been many studies performed to evaluate the effect of compression-tension loading on wedging of the spine. Despite all these studies, only [2] investigated the effect of torque on segmented bodies, but did not incorporate independent torque control. The goal of this project was to design a torque device that allows controlled torque to be applied to segmented bodies and to validate the design through in-vitro testing.

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