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Added by Christian Veillette , last edited by Christian Veillette on Sep 06, 2008  (view change)
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Location Spine
Diagnosis Avascular Necrosis
Discussion Single frontal radiograph of the spine revealing a horizontally oriented linear area of lucency within the body of a single collapsed vertebral body. The intravertebral vacuum cleft sign is a gas-density cleft with a transverse separation of the vertebral body, appearing in extension and disappearing in flexion. It is secondary to local bony ischemic necrosis with nonhealing vertebral collapse. This ischemic vertebral fracture is not known to occur secondary to inflammation or neoplastic causes.
Reference Maldague BE, Noel HM, Malghem JJ: The intravertebral vacuum cleft: a sign of ischemic vertebral collapse. Radiology 1978 Oct;129(1):23-9.

Bhalla S, Reinus WR: The linear intravertebral vacuum: a sign of benign vertebral collapse. AJR Am J Roentgenol 1998 Jun;170(6):1563-9.
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