Which type of spinal fracture is characterized by spreading of the vertebral body edges?

A burst fracture is characterized by the spreading of the vertebral body edges, resulting from high-energy axial loading, such as a fall from a height or a motor vehicle accident. This type of fracture involves a significant disruption of the vertebral body, causing it to shatter and lead to fragments that can expand outward from the center of the vertebra. This outward displacement is what distinguishes burst fractures from other types.

In contrast, a wedge fracture involves a compression mechanism where the anterior portion of the vertebral body collapses or is compressed, leading to a wedge-shaped appearance. This does not typically result in the spreading of the body edges.

A transverse fracture, on the other hand, involves a complete break that goes across the vertebrae but does not encompass the spreading aspect associated with burst fractures.

Lastly, a concave fracture is not a recognized term in the context of spinal injuries. It does not specifically describe the fracturing pattern seen in the vertebra.

Therefore, burst fractures are unique in their presentation of spreading vertebral body edges, setting them apart from the other types of fractures mentioned.