Spondylolisthesis is defined as displacement of a vertebral body in relation to the vertebral body below it. Panel A depicts anterolisthesis of L5. Panel B depicts lateral listhesis of L2.
(B) Modified from: Schwab FJ, Smith VA, Biserni M, et al. Adult scoliosis: A quantitative radiographic and clinical analysis. Spine (Phila Pa 1976) 2002; 27:387.
