Vertebral Canal Anatomy PDF
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This document describes the vertebral canal and its progressive reduction in size descending from the upper to lower portions of the spinal column. It also highlights the structures and relationships of the vertebral bodies, pedicles, laminae, and other components involved. Anatomy of the lumbar spine is discussed briefly, noting the articulation of the facet joint and relationship of intervertebral discs.
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*The vertebral canal (see p. 421) becomes progressively smaller from above downwards. It is closed* *anteriorly by the vertebral bodies, the intervertebral discs and the posterior longitudinal ligament and* *posteriorly by the laminae and the ligamenta flava. Laterally it is occupied by the pedicl...
*The vertebral canal (see p. 421) becomes progressively smaller from above downwards. It is closed* *anteriorly by the vertebral bodies, the intervertebral discs and the posterior longitudinal ligament and* *posteriorly by the laminae and the ligamenta flava. Laterally it is occupied by the pedicles, which are* *narrower than the height of the vertebral bodies. Thus a series of intervertebral foramina is* *produced between adjacent pedicles which form the upper and lower boundaries of each foramen. In* *the thoracic and lumbar regions each intervertebral foramen is bounded in front by the lower part of a* *body of a vertebra (mainly, in the thoracic region; Fig. 6.92) and the adjacent intervertebral disc* *(mainly, in the lumbar region; Fig. 6.93), and behind by the facet joint and its capsule. In the cervical* *region, because the pedicle arises from a little lower down the back of the body, a small part of the* *vertebral body below the disc is also included in this anterior boundary (Fig. 6.88). The* *intervertebral foramina lodge the*
