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a Cobb angle measurement: Lines are drawn extending the endplate of the superior and inferior end vertebra. Perpendiculars to these lines define the Cobb angle. b The end vertebra [EV] is the most tilted vertebra, the stable vertebra [SV] is bisected by the centralsacral vertical line [CSVL], and the neutral vertebra [NV] shows no rotation (symmetric pedicles)
