Types of osteoporotic vertebral fracture

Schematic representation of the different types of vertebral fracture seen in osteoporosis. The central depression with the biconcave or codfishing appearance occurs because the edges of the vertebrae, being supported by the outer walls of the vertebrae, are stronger than the central part. In comparison, the anterior aspect of the vertebral body collapses more than the posterior aspect with a wedge fracture, while the entire vertebral body collapses down with a compression fracture.