Supra-acetabular line is better than supra-iliac line for coronal balance referencing – A study of perioperative whole spine X-rays in degenerative lumbar scoliosis and ankylosing spondylitis patients

The aim of spinal deformity correction is to restore the spine's functional alignment by balancing it in both the sagittal and coronal planes. Regardless of posture, the ideal coronal profile is straight, and therefore readily assessable.

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