Scheuermann’s kyphosis is a rigid sagittal plane deformity within the thoracic, thoracolumbar, or lumbar spine. The cause of Scheuermann’s kyphosis (often named as “Scheuermann’s disease,” or simply “Scheuermann’s”) is not known. This condition is characterized by uneven growth of the vertebrae in the sagittal plane. Posterior overgrowth results in wedging of the vertebrae and a rounded, hunched back that does not fully correct with active extension. Approximately 50% of cases of Scheuermann's kyphosis are associated with back pain.
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