Fig. 2From: Impact of Spinopelvic sagittal alignment on the surgical outcomes of dropped head syndrome: a multi-center studyThe relationship between SVA (X-axis) and PI-LL (Y-axis). Each plot represents a case (circular plots: nonfailure cases, rhomboid plots: failure cases). SVA: sagittal vertical axis, PI-LL: pelvic incidence minus lumbar lordosisBack to article page