Abstract
The normal lumbar spine consists of five vertebral bodies which constitute some kind of lordosis and which are, in normal cases, perfectly aligned by three major ligaments:
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Anterior longitudinal ligament
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Posterior longitudinal ligament
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Ligamenta flava
The lumbar vertebrae enclose the spinal canal, which contains the thecal sac (enclosed by the dura mater) with the spinal cord, conus medullaris, cauda equina and cerebrospinal fluid. The thecal sac is surrounded by epidural fat and a venous plexus. In cross-section, the spinal canal is circular in the upper lumbar spine segments and triangular in the lower part of the lumbar spine.
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Carpentier, K., Augsburg, L., De Potter, B., Van Goethem, J.W.M., Parizel, P.M. (2016). A Concise Introduction to the Imaging of the Lumbar Spine. In: van de Kelft, E. (eds) Surgery of the Spine and Spinal Cord. Springer, Cham. https://doi.org/10.1007/978-3-319-27613-7_21
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DOI: https://doi.org/10.1007/978-3-319-27613-7_21
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