Fig. 1From: Development and validation of a nomogram for prediction of the risk of positive hidden blood loss in the perioperative period of single-level thoracolumbar burst fractureRadiographic measurement of fractured vertebral body. a Preoperative lateral radiograph; a is the height of the fractured vertebra; b is the upper anterior vertebral height adjacent to the fractured vertebra, and c is the lower anterior vertebral height adjacent to the fractured vertebra. b Postoperative lateral radiograph; e is the postoperative vertebral body height. Note: d is the predicted height of each fractured vertebra which is calculated according to the average height of the two adjacent vertebrae (b and c)Back to article page