0
What else can I help you with?
Is the cross section of hollow cylider is called annulus?
Yes. An annulus is a circular disc with a concentric circular disc cut out of it.
What is the mean of L4-5 disc shows large posterolateral disc protrusion indenting the thecal sac and compromising both the lateral recesses?
posterocentral
What is annulus?
We all have cartilaginous discs that separate the spinal bones, or vertebraes, from each other. These discs allow for movement within the spine. Each disc has a fibrous outside, called the annulus fibrosus, and a liquid center, called the nucleus pulposus. Think of a disc as a jelly donut. The jelly is the nucleus and the donut is the annulus. If the fibers of the inner annulus tear, the jelly nucleus, which is tightly held in the center, follows the path of least resistance and pushes towards the wall of the annulus. When this happens, the wall of the annulus is warped and appears to bulge or protrude. This is known as a protruding annulus or ,in other words, a bulging disc. If the annulus continues to weaken and tear, the nucleus has potential to eject from the disc. The annulus will no longer be bulging, as the wall has opened and the jelly nucleus has squeezed out or herniated. This now constitutes a herniated disc.
What are the two parts to the intervertebral disk?
The two parts of the intervertebral disc are the nucleus pulposus and the annulus fibrosis. The nucleus pulposus is considered the central portion while the annulus fibrosis is the anterior area of the disc.
What is left foraminal annular tear?
A left foraminal annular tear is when the annulus fibrosus rips or tears. The annulus fibrosus is the tough exterior of the intervertebral disc.
The annulus fibrosus and nucleus pulposus are components of what?
They are components of the intervertebral disc, which is a structure located between adjacent vertebrae in the spine. The annulus fibrosus is the tough outer layer of the disc, while the nucleus pulposus is the gel-like inner core that provides cushioning and flexibility.
What does multifocal bulging of the annulus fibrosis mean?
The annulus is a part of the spinal structure, specifically the outer fibers. When the annulus is damages, normally through aging (degenerative) or trauma, it allows the cervical disc, a gel-like material to expand. The more damage to the annulus, the more significant the bulge. In the worst cases, the disc "herniates" and may cause pressure on the nerve roots which run through the spine. In the neck (cervical spine), effected nerves run to the upper extremities. Therefore, if a bulging disc impinges on a nerve root in the cervical spine, it usually results in radiating pain, numbness and/or weakness in the arms. Surgery is sometimes necessary to remove the disc or otherwise relieve the pressure on the nerve root.
Which tissue is involved in slipped disc?
The tissue primarily involved in a slipped disc, also known as a herniated disc, is the intervertebral disc. These discs consist of a tough outer layer called the annulus fibrosus and a gel-like inner core known as the nucleus pulposus. When the annulus fibrosus weakens or tears, the nucleus pulposus can protrude out, potentially compressing nearby spinal nerves and causing pain or other symptoms.
What is small focus of T2 hyperintensity within the left posterior paracentral disc annulus?
A small focus of T2 hyperintensity within the left posterior paracentral disc annulus typically indicates a possible degenerative change or a minor internal disruption of the intervertebral disc. This hyperintensity on MRI suggests increased water content or inflammation within the disc structure, which may be associated with disc herniation, a tear, or other degenerative disc disease. It is important to correlate these imaging findings with clinical symptoms for appropriate diagnosis and management.
Invertebral disc are made of what tissue?
You have outer annulus fibrosus. Which is made of fibrous tissue. Inside the annulus fibrosus, you have jelly like nucleus pulposus.
How do you find the area of a ring?
If R and r are the outer and inner radii of the annulus (ring) then the area is pi*(R2 - r2), which is simply the area of the big disc minus that of the little disc.
Are the pubic symphysis and annulus fibrosus made of the same type of tissue?
No, the pubic symphysis is a cartilaginous joint formed by fibrocartilage, while the annulus fibrosus is a part of the intervertebral disc made up of concentric layers of fibrocartilage.
