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Diagrammatic drawing of measurement data. (A) Overall cervical lordosis: the Cobb angle from the C2 inferior endplate to the C7 inferior endplate. (B) The total vertical height of 2 vertebral bodies divided by the anterior-posterior diameter of the upper vertebral body on a lateral radiograph (IHR = b/a). (C) The anterior and posterior intervertebral height (FSH). (D) The distance between the posterior margin of the cage and the wall of the vertebralbody (D-CAW).
