The canal is bony channel formed by the vertebrae bones. The spinal cord and nerve roots lie within the canal and are protected by the bones. The “spinal canal” is not the same as the “spine.” The word “spine” describes only the bones and ligaments.
The bony channel that is formed by the intravertebral foramen of the vertebrae and in which contains the spinal cord and nerve roots. The space between the vertebral body anteriorly and the lamina and spinal process posteriorly.
Vertebral canal. A relatively narrow tubular passage or channel in the spine, encasing the spinal cord and the nerves. It changes in size at different levels, and its diameter can be measured very well with axial views of the CT scan.
The spinal canal (or vertebral canal) is the space in vertebrae through which the spinal cord passes. This canal is enclosed within the intervertebral foramen of the vertebrae. In the intervertebral spaces, the canal is protected by the ligamentum flavum posteriorly and the posterior longitudinal ligament anteriorly.