Fig. 3.

Examples of actual fractures of each subtype in the Genant semi-quantitative grading system. All images are sagittal radiographs of thoracolumbar vertebrae oriented with anterior to the right. Top row: 5 year-old girl with acute lymphoblastic leukemia; 9 year-old girl with acute lymphoblastic leukemia; 6 year-old boy with acute lymphoblastic leukemia. Middle row: 10 year-old girl with acute lymphoblastic leukemia; 10 year-old girl with osteogenesis imperfecta; 5 year-old girl with acute lymphoblastic leukemia. Bottom row: 9 year-old girl with acute lymphoblastic leukemia; 8 year-old girl with acute lymphoblastic leukemia; 10 year-old boy with histiocytosis. Arrows indicate the fracture in each image. In the image of grade 2 crush fracture, note also the grade 1 wedge fracture at the vertebra below