MRI-defined erector spinae fatty infiltration predicts progression of sagittal spinal malalignment: a population-based longitudinal cohort study.
BACKGROUND CONTEXT Sagittal malalignment in adult spinal deformity (ASD) is associated with disability and reduced quality of life. Although paraspinal muscle degeneration has been implicated in spinal alignment changes, longitudinal predictors of ASD progression remain unclear. PURPOSE To determine whether MRI-defin...