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Operative Spinal Cord Anatomy

Last Updated: October 1, 2018

The spinal cord (SC) is a longitudinal neural structure within the spinal canal, which acts mostly as a conduit for information reaching or leaving the periphery of the body. The SC starts at the foramen magnum and extends to the conus medullaris at approximately the level of the first lumbar vertebra.

The SC is 45 cm in length and is shorter than the spinal canal due to the classical growth mismatch between it and the vertebral column during embryonic development. Thus, in order to maintain the established segmental connections, thoracolumbar roots must elongate to reach their intervertebral foramina.

As a consequence, the upper cervical roots reach thei...