Based on the findings in this study, the authors recommend positioning the arms at 30 degrees of forward flexion from the vertical when obtaining a long cassette lateral radiograph of the entire spine.

The push-prone and lateral-bending radiographs are similar in predicting less correction of the Cobb angle after anterior spinal surgery. The push-prone radiograph helps in determining the effects that correction of the primary curve has on the curves above and below the level of fusion by better predicting the translational correction of the lowest instrumented vertebra and the rotation of the lowest instrumented vertebra.