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J Clin Neurosci. 2010 Oct;17(10):1345-6. doi: 10.1016/j.jocn.2010.03.012. Epub 2010 Aug 3.

Vertical atlantoaxial dislocation as a cause of failure of midline fixation.

Author information

1
Department of Neurosurgery, Seth G.S. Medical College and King Edward Memorial Hospital, Acharya Donde Marg, Parel, Mumbai 400 012, India. atulgoel62@hotmail.com

Abstract

We report an 11-year-old girl who had previously undergone an operation for basilar invagination involving a foramen magnum decompression and midline wire fixation. After improving initially, her neurological condition worsened again. Repeated investigations showed a firm midline craniovertebral fixation and bone fusion. However, she was found to have a vertical mobile and reducible atlantoaxial dislocation. Treatment of the vertical dislocation by lateral mass fixation resulted in lasting relief from her symptoms. Vertical instability at the atlantoaxial joints needs to be identified and appropriately treated as it may be a cause of failure of midline fixation.

PMID:
20678940
DOI:
10.1016/j.jocn.2010.03.012
[Indexed for MEDLINE]

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