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Wedging in body and disc in thoracic spine. In thoracic spine, the vertebral wedging is significantly greater than the disc wedging. X-axis shows level of wedging measurement. 1 U: 1st upper body or disc. 2 U: 2nd upper body or disc. 1 L: 1st lower body or disc. 2 L: 2nd lower or disc. Y-axis shows wedging in of body or disc in degree.
