What is the ventral aspect of the thecal sac?

What is the ventral aspect of the thecal sac?

The ventral thecal sac refers to the ventral, or front side of the thecal sac, which is a membrane that surrounds the spinal cord and some cerebrospinal fluid. A diagnosis of spinal injury and disease takes the appearance of the thecal sac into consideration.

What is impression on the thecal sac?

That means there is something within the thoracic spine that is slightly putting pressure on the covering of the spinal cord, the “thecal sac”. So, for example, you may have a disc bulge that presses on the spinal cord — thus the thecal impression.

What does ventral thecal sac effacement mean?

Compression of the thecal sac means the protective membrane covering the spinal cord is experiencing extra pressure, according to Merck Manuals. Effacement of the thecal sac means that the thecal sac is being shortened or narrowed, according to the Free Dictionary.

Is syringomyelia a rare disease?

Syringomyelia is a rare condition that causes the development of a fluid-filled cyst in the spinal cord. As the cyst enlarges over time, it may cause muscle atrophy, loss of reflexes, and loss of sensitivity to pain and temperature.

Can small disc protrusion cause pain?

Complications of Disc Protrusion Spinal disc changes are a normal part of aging, and many people live active, pain-free lives with disc protrusion. However, some people experience pain, weakness and loss of movement from protruding discs. Complications may include: Nerve compression.

How bad is syringomyelia?

Syringomyelia (sih-ring-go-my-E-lee-uh) is the development of a fluid-filled cyst (syrinx) within your spinal cord. Over time, the cyst can enlarge, damaging your spinal cord and causing pain, weakness and stiffness, among other symptoms.

What is severe thecal sac compression?

Thecal Sac Compression – The spinal cord and nerves are also protected by a membrane filled with cerebral spinal fluid known as the thecal sac or dural sac. Flattening or compression of the thecal sac will occur in other conditions that cause pressure or pinching of the spinal cord, such as stenosis.

What happens if thecal sac is compressed?

If there is central stenosis and marked compression of the entire dural/thecal sac, the patient may demonstrate paralysis (e.g., cauda equina syndrome) with sphincter loss (bladder and rectal dysfunction).

Is thecal sac compression painful?

In severe cases, the nervous tissue may be pinched, interfering with the brain’s ability to send and receive messages from a particular part of the body. Compression of the spinal cord is a spinal condition that can occur at any section of the spine and may cause pain, muscle weakness, or numbness.

Does spinal cord compression affect the brain?

For some, it leads to compression of the spinal cord which can cause problems with dexterity, numbness in the hands, and the ability to walk. New research looks beyond the spinal cord injury in these patients, and found they also experience changes in the motor cortex of the brain.

Is the thecal sac a nerve?

Central stenosis compresses the midline (in the middle) sac of nerve tissue (dural or thecal sac containing the lumbar nerve roots).