Fig. 3From: Differences in standing and sitting spinopelvic sagittal alignment for patients with posterior lumbar fusion: important considerations for the changes of unfused adjacent segments lordosisFemale with 67 years old, 77 months follow-up after L3–5 fusion. The most noticeable changes of spinopelvic alignment occurred in the natural sitting position. A. URL was 12.2° in erect sitting; B. URL was 5.3° in natural sitting. The trunk slumped toward achieving a C-shaped sagittal profile (yellow line)Back to article page