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2. Conus medullaris - Wikipedia

   en.wikipedia.org/wiki/Conus_medullaris

   The conus medullaris (Latin for "medullary cone") or conus terminalis is the tapered, lower end of the spinal cord. It occurs near lumbar vertebral levels 1 (L1) and 2 (L2), occasionally lower. [ 1 ] [ 2 ] The upper end of the conus medullaris is usually not well defined, however, its corresponding spinal cord segments are usually S1–S5.

3. Filum terminale - Wikipedia

   en.wikipedia.org/wiki/Filum_terminale

   The filum terminale is situated centrally [2] amid the spinal nerve roots of the cauda equina [3] [2] (but is not itself a part of the cauda equina [2]).. The inferior-most spinal nerve, the coccygeal nerve, leaves the spinal cord at the level of the conus medullaris via respective vertebrae through their intervertebral foramina, superior to the filum terminale.

4. Spinal cord - Wikipedia

   en.wikipedia.org/wiki/Spinal_cord

   Sectional organization of spinal cord. The spinal cord is the main pathway for information connecting the brain and peripheral nervous system. [3] [4] Much shorter than its protecting spinal column, the human spinal cord originates in the brainstem, passes through the foramen magnum, and continues through to the conus medullaris near the second lumbar vertebra before terminating in a fibrous ...

5. Tethered cord syndrome - Wikipedia

   en.wikipedia.org/wiki/Tethered_cord_syndrome

   A tethered cord is often diagnosed as a "low conus". The conus medullaris (or lower termination of the spinal cord) normally terminates at or above the L1-2 disk space (where L1 is the first, or topmost lumbar vertebra). After about 3 months of age, a conus below the L1-2 disk space may indicate a tethered cord and termination below L3-4 is ...

6. Lumbar enlargement - Wikipedia

   en.wikipedia.org/wiki/Lumbar_enlargement

   The lumbar enlargement (or lumbosacral enlargement) is a widened area of the spinal cord that gives attachment to the nerves which supply the lower limbs.. It commences about the level of T11 and ends at L2, and reaches its maximum circumference, of about 33 mm. Inferior to the lumbar enlargement is the conus medullaris.

7. Conus medullaris syndrome - Wikipedia

   en.wikipedia.org/?title=Conus_medullaris...

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8. Thecal sac - Wikipedia

   en.wikipedia.org/wiki/Thecal_sac

   The lumbar cistern is part of the subarachnoid space.It is the space within the thecal sac which extends from below the end of the spinal cord (the conus medularis), typically at the level of the first to second lumbar vertebrae down to tapering of the dura at the level of the second sacral vertebra.

9. Artery of Adamkiewicz - Wikipedia

   en.wikipedia.org/wiki/Artery_of_Adamkiewicz

   In human anatomy, the artery of Adamkiewicz (also arteria radicularis magna) is the largest anterior segmental medullary artery and the dominant segmental feeding vessel to the thoracic cord, supplying the anterior aspect of the cord (from T8 to the conus medullaris) via the anterior spinal artery. [3]