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A member asked:
Which part of the spinal column has the narrowest canal for the cord to pass through?
3 doctors weighed in across 2 answers
Variable : As one ages the lumbar spine narrows more than the cervical spine;;injuries may contribute to the problem.
Answered 5/2/2013
5.2k views
Canal anatomy: The diameter of the bony spinal canal is largest c1-2, and then in the lumbar spine. The spinal cord ends at l1-2. Generally, the canal is relatively constant in diameter from the cervical to thoracic spine accommodating the cord and providing another 60% of its diameter as a buffer for spinal fluid and tissues. Average diameters are around 17mm throughout and considered critical if under 10 mm.
Answered 10/1/2013
5.2k views
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