dural sac

This may be accomplished with or without resection and repair of the duplicated dural sacs.

Most cysts are located posteriorly or laterally to the dural sac.

They are found at the point of exit of a dorsal nerve root from the dural sac.

The dural sac ends at the vertebral level of the second sacral vertebra.

It may also affect the lungs, the eyes, the dural sac surrounding the spinal cord, the skeleton and the hard palate.

The cauda equina exists within the lumbar cistern, which is the space formed from the surrounding dural sac.

Dural ectasia, dilation of the dural sac surrounding the spinal cord, usually in the very low back.

Dural ectasia is a widening or ballooning of the dural sac surrounding the spinal cord usually at the lumbosacral level.

In the lumbar and sacral region, the spinal nerve roots travel within the dural sac and they travel below the level of L2 as the cauda equina.

In most of the symptomatic patients, the spinal cord is split into halves by a bony spicule or fibrous band, each half being surrounded by a dural sac.

Dural ectasia, the weakening of the connective tissue of the dural sac encasing the spinal cord, though not life-threatening, can reduce the quality of life for an individual.

Resection and repair of the duplicated dural sacs is preferred since the dural abnormality may partly contribute to the "tethering" process responsible for the symptoms of this condition.

The ligamentum flavum (yellow ligament), an important structural component intimately adjacent to the posterior portion of the dural sac (nerve sac) can become thickened and cause stenosis.

Type I : Extra-dural; no nerve roots or rootlets such as intra-sacral meningoceles; probably of congenital origin developing from the dural sac to which they are connected by a little collar.

In approximately 60% of patients with diastematomyelia, the two hemicords, each covered by an intact layer of pia arachnoid, travel through a single subarachnoid space surrounded by a single dural sac.

A lumbar puncture is done by positioning the person, usually lying on the side, applying local anesthetic, and inserting a needle into the dural sac (a sac around the spinal cord) to collect cerebrospinal fluid (CSF).