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Childs Nerv Syst. 2011 Jan;27(1):183-6. doi: 10.1007/s00381-010-1275-y. Epub 2010 Sep 2.

Chiari 1 malformation and holocord syringomyelia presenting as abrupt onset foot drop.

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Division of Neurology, Children's Hospital of Eastern Ontario, University of Ottawa, 401 Smyth Road, Ottawa, Ontario, Canada.


We present two patients with a Chiari 1 malformation and holocord syringomyelia who presented with abrupt onset unilateral foot drop. Neurophysiologic testing was consistent with a proximal nerve root lesion. This assisted with localization and directed magnetic resonance (MR) imaging to lumbosacral spine and nerve roots. Each child underwent a suboccipital craniectomy and laminectomy with duroplasty to decompress the foramen magnum. Each child also showed rapid and complete clinical recovery despite the significant electromyographic and MRI abnormalities on initial study.

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