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Multiple vertebral osteonecrosis
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DOI：10.1016/j.jbspin.2007.05.010.png)
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Vertebral osteonecrosis classically presents with an intravertebral vacuum cleft phenomenon or a fluid-filled cleft on MR images. These clefts are usually found in older patients presenting with more severe fractures, more significant collapse and instability. Therefore, although considered for a long time as pathognomonic for vertebral osteonecrosis, vertebral clefts are now considered to represent fracture non-union. The double-line sign is classically described for osteonecrosis of long bones, but has been reported in one case of concurrent spinal cord and vertebral bone marrow radionecrosis. We present a case of a histologically confirmed multilevel vertebral osteonecrosis manifesting as a double-line sign in the absence of an associated vertebral collapse and unrelated to radiotherapy. (C) 2007 Elsevier Masson SAS. All rights reserved.
Keyword:
vertebral osteonecrosis
intravertebral vacuum cleft phenomenon
double
line sign
fracture non-union
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