Wedge fractures are hyperflexion injuries to the vertebral body resulting from axial loading. Most commonly affecting the anterior aspect, wedge fractures are considered a single-column (i.e. stable) fracture.
Less commonly wedge fractures refer to a subtype of tibial plateau fractures. This article addresses vertebral body wedge fractures.
Most common type (~50%) of thoracolumbar spine fractures 4.
They are characterised on radiographs, CT and MRI by cortical disruption and impaction of the antero-superior endplate, while the antero-inferior endplate and posterior vertebral body remains unaffected, resulting in a "wedged" appearance to the vertebral body 3,4.
- burst fracture: fracture of anterior and posterior vertebral body (i.e. two-column injury) 4
- may be associated with posterior ligamentous injury (and thus potentially an unstable injury), this should always be assessed for
- fractures by location
- cervical spine fracture classification systems
- thoracolumbar spinal fracture classification systems
- three column concept of spinal fractures (Denis classification)
- classification of sacral fractures
- facet dislocation
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