Title: Cervical Cord Neuropraxia (CCN)<br/>Author: Brian Corwell<br/><a href='http://umem.org/profiles/faculty/294/'>[Click to email author]</a><hr/><p>
<u><strong>Cervical Cord Neuropraxia (CCN)</strong></u></p>
<p>
A concussion of the spinal cord as a result of an on-field collision.</p>
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A transient motor and/or sensory disturbance, lasting less than 24 hours.</p>
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A distinct and separate entity from spinal cord injury resulting in quadriplegia</p>
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Incidence 7.3 per 10,000 athletes</p>
<p>
Approx. 50% of players experiencing CCN who return to play, have a second episode</p>
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The risk of this second episode is inversely proportional to the size of the cervical bony canal</p>
<p>
Athletes with narrow canal diameter are more likely to have a 2nd episode</p>
<p>
Those with normal canal diameter (14 mm on MRI) have a 5% risk</p>
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Those with a narrow canal (9 mm or less)) have a greater than 50% risk.</p>
<p>
Whether repeat episodes lead to permanent spinal cord injury is unknown</p>
<fieldset><legend>References</legend>
<p>
Bell, Gordon. Return to play after Cervical Cord Neuroplraxia.2014</p>
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