The Lower Lordotic Arch More Precisely Predicts Pelvic Positioning for Adult Spinal Deformity Patients with an Aligned T4-L1-Hip Axis.
STUDY DESIGN Retrospective cohort. OBJECTIVE To assess the combined effect of lower lordotic arch (LLA) and thoracolumbar (T4-L1-hip axis) alignment correction on the ability to predict sacral slope (SS) (i.e. pelvic retroversion) in adult spinal deformity (ASD). SUMMARY OF BACKGROUND DATA The Roussouly framework c...