Denticulate ligaments
Updates to Article Attributes
The Denticulatedenticulate ligaments are bilateral triangular extensions of pia mater in that anchor the spinal cord to the dura mater. They are formed as theby pia mater of the spinal cord coursescoursing in between-between the dorsal and ventral nerve roots on both sides. This forms bilateral tooth like projections which extend laterally and attach to dura mater at 21 points from just superior to the C1 spinal nerve to the T12-L1 spinal nervesbilaterally. They function to provide stability to the spinal cord within the vertebral canal 1-3. There are usually 21 pairs evenly spaced along the length of the spinal cord but their number can range from 18 to 24 pairs. They are thickest in the cervical spine. The first (superiormost) pair inserts into the lateral borders of the foramen magnum, with the vertebral artery anterior to them and the hypoglossal nerve (CN XII) posterior. The inferiormost pair is at the level of the conus medullaris, namely, between the T12 and L1 segmental nerve roots, and its pia mater fuses with the filum terminale.
Each triangular ligament has a vertically oriented base that emanates from the spinal cord between the exit point of the of the ventral root and entry point of the dorsal root, and an apex which points laterally and attaches to the dura mater just posterosuperior to the neural foramen 4.
-<p><strong>Denticulate ligaments</strong> are bilateral triangular extensions of <a href="/articles/pia-mater">pia mater</a> in the spinal cord. They are formed as the pia mater of the <a href="/articles/spinal-cord">spinal cord</a> courses in between the dorsal and ventral nerve roots on both sides. This forms bilateral tooth like projections which extend laterally and attach to dura mater at 21 points from just superior to the C1 spinal nerve to the T12-L1 spinal nerves. They function to provide stability to the spinal cord within the vertebral canal <sup>1-3</sup>. </p>- +<p>The <strong>denticulate ligaments</strong> are bilateral triangular extensions of <a href="/articles/pia-mater">pia mater</a> that anchor the spinal cord to the dura mater. They are formed by pia mater of the <a href="/articles/spinal-cord">spinal cord</a> coursing in-between the dorsal and ventral nerve roots bilaterally. They function to provide stability to the spinal cord within the vertebral canal <sup>1-3</sup>. There are usually 21 pairs evenly spaced along the length of the spinal cord but their number can range from 18 to 24 pairs. They are thickest in the cervical spine. The first (superiormost) pair inserts into the lateral borders of the foramen magnum, with the vertebral artery anterior to them and the hypoglossal nerve (CN XII) posterior. The inferiormost pair is at the level of the conus medullaris, namely, between the T12 and L1 segmental nerve roots, and its pia mater fuses with the filum terminale.</p><p>Each triangular ligament has a vertically oriented base that emanates from the spinal cord between the exit point of the of the ventral root and entry point of the dorsal root, and an apex which points laterally and attaches to the dura mater just posterosuperior to the neural foramen <sup>4</sup>.</p>
References changed:
- 4. Thomas P. Naidich, Mauricio Castillo, Soonmee Cha. Imaging of the Spine. <a href="https://books.google.co.uk/books?vid=ISBN9781437715514">ISBN: 9781437715514</a><span class="ref_v4"></span>
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