Backache, Medical Exam, Mature Adult, Rear View, Showing
Which of the following radiographic measurements from a lateral full-length standing radiograph correlates most closely with patient-reported outcome measures after operative correction of a thoracolumbar deformity?
The difference between the lumbar lordosis and pelvic tilt
This is not a measurement used to define sagittal parameters or outcomes. The measurement used is pelvic incidence (PI) – lumbar lordosis (LL) =
The angle between the line along the superior endplate of S1 and the horizontal line
This is the sacral slope and it is not specifically correlated to outcomes.
The angle between the bisector point between the femoral heads and the midpoint of the S1 superior endplate and the vertical line
This is the pelvic tilt. It should be
The distance from the C7 plumb line from the posterosuperior corner of the S1 endplate
This measurement is called the sagittal vertical axis (SVA) (distance from the C7 plumb line to the posterosuperior corner of the S1 endplate), and it best correlates with patient-reported outcome measures in patients with thoracolumbar deformity. This distance should be
