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- Kern H Guppy, Mark Hawk, Indro Chakrabarti, and Amit Banerjee.
- Department of Neurosurgery, The Kaiser Permanente Medical Group, Sacramento, California, USA. kern.h.guppy@kp.org
- J Neurosurg Spine. 2009 Apr 1;10(4):366-73.
AbstractThe authors present 2 cases involving patients who presented with myelopathy. Magnetic resonance imaging of the cervical spine showed spinal cord signal changes on T2-weighted images without any spinal cord compression. Flexion-extension plain radiographs of the spine showed no instability. Dynamic MR imaging of the cervical spine, however, showed spinal cord compression on extension. Compression of the spinal cord was caused by dynamic anulus bulging and ligamentum flavum buckling. This report emphasizes the need for dynamic MR imaging of the cervical spine for evaluating spinal cord changes on neutral position MR imaging before further workup for other causes such as demyelinating disease.
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