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KMID : 1001920150580060560
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Journal of Korean Neurosurgical Society
2015 Volume.58 No. 6 p.560 ~ p.562
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Lying Down Instability Undetected on Standing Dynamic Radiographs
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Kim Hyeun-Sung
Ju Chang-Il
Kim Seok-Won
Kang Jung-Hoon
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Abstract
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It is well known that spinal instability should be evaluated in the standing lateral position. Standing dynamic flexion and extension radiographs are usually used to assess spinal instability. Here, we report a patient who experienced distraction instability while in the supine position rather than the standard standing position. To our knowledge, this is the first report of lying-down instability undetected on standing dynamic flexion and extension radiographs. We discuss the pathophysiological mechanism of this uncommon but possible entity and provide a review of the literature.
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KEYWORD
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Distraction, Dynamic, Instability
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