Ligamentum flava extends from the lower anterior part of one lamina to the posterior part of the superior border of the subjacent lamina.  The fibers attach between the zygapophyseal joint capsules and the root of the spinous process.  The ligamentum flava is present between adjacent vertebrae from the posterior arch of C1 (atlas) to L5.  The ligamentum flava fuses with the anterior fibrous capsules of the zygapophyseal joints.