Ligamenta flava Totally Explained

Everything about The Ligamenta Flava totally explained

The ligamenta flava connect the laminæ of adjacent vertebræ, from the axis to the first segment of the sacrum.
   They are best seen from the interior of the vertebral canal; when looked at from the outer surface they appear short, being overlapped by the laminæ.
   Each ligament consists of two lateral portions which commence one on either side of the roots of the articular processes, and extend backward to the point where the laminæ meet to form the spinous process; the posterior margins of the two portions are in contact and to a certain extent united, slight intervals being left for the passage of small vessels.
   Each consists of yellow elastic tissue, the fibers of which, almost perpendicular in direction, are attached to the anterior surface of the lamina above, some distance from its inferior margin, and to the posterior surface and upper margin of the lamina below.
   In the cervical region the ligaments are thin, but broad and long; they're thicker in the thoracic region, and thickest in the lumbar region.
   Their marked elasticity serves to preserve the upright posture, and to assist the vertebral column in resuming it after flexion.
   The elastin prevents buckling of the ligament into the spinal canal during extension, which would cause canal compression.
   Hypertrophy of this ligament may cause canal stenosis because it lies in the posterior portion of the vertebral canal.

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