Thoracolumbar Spine Anatomy and Pathology - Thoracolumbar Spine, Young Female

Sagittal section in the midline through the thoracolumbar spine of a young female adult

Sagittal section in the midline through the thoracolumbar spine of a young female adult. The conus medullaris typically terminates at the L1–L2 disc level. This specimen also shows the caudal extension of the conus, the filum terminate and also outlines the central canal of the spinal cord. The upper two vertebrae show vascular venous outlet foramina (Batson) through which the veins in the vertebral body communicate with the anterior epidural veins. Note the marked increase in disc height from the lower thoracic to the upper lumbar spine. The posterior annulus of all discs is straight, rendering the anterior wall of the spinal canal straight. The conus medullaris is surrounded by bundles of thick cauda equina roots, motor anterolaterally and sensor dorsolaterally. The intrathecal reserve space is much smaller than in the thoracic and cervical spine.

Updated on: 11/05/18
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