The Intravertebral Vacuum Cleft: A Sign of Ischemic Vertebral Collapse

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Abstract
A gas-density cleft within a transverse separation of the vertebral body, appearing in extension and disappearing in flexion, was observed in 10 cases of vertebral collapse at the thoraco-lumbar junction. The patients were 55-83 yr old (mean 68); 7 of them on chronic corticosteroid therapy. Such an intravertebral cleft was not found in vertebral collapse of tumoral, inflammatory, or traumatic origin and was thought to represent ischemic vertebral fracture. This sign could be helpful in the differential diagnosis of vertebral collapse in elderly patients.

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