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Fig. 2 | Scoliosis

Fig. 2

From: The new Lyon ARTbrace versus the historical Lyon brace: a prospective case series of 148 consecutive scoliosis with short time results after 1 year compared with a historical retrospective case series of 100 consecutive scoliosis; SOSORT award 2015 winner

Fig. 2

From segmental derotation to global detorsion or untwisting. The segmental derotation is difficult to achieve because it is done via the ribs and could increase flat back. It is impossible to obtain when the rib hump is angular. The mathematical basis of the twisted column is the circled helicoid with horizontal generating circle. The overall untwisting occurs between the axillary and pelvic clamps and the thoracolumbar horizontal plane

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