backbone


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spine

 [spīn]
1. a thornlike process or projection; called also acantha and spina.
2. the rigid bony structure in the midline of the back, composed of the vertebrae; called also backbone, spinal column, and vertebral column.



The spinal column is the axis of the skeleton; the skull and limbs are in a sense appendages. The vertebrae also provide the protective bony corridor (spinal canal) through which the spinal cord passes; they can move to a certain extent and so give flexibility to the spine, allowing it to bend forward, sideways and, to a lesser extent, backward. In the areas of the neck and lower back, the spine also can pivot, which permits the turning of the head and torso.

There are usually 24 movable vertebrae and nine that are fused together. The topmost are the seven cervical vertebrae, which form the back of the neck, supporting the skull. The head turns from side to side by means of a pivotal motion between the two highest vertebrae. Below these are the 12 thoracic vertebrae, the supports on which the ribs are hinged, and then the five lumbar vertebrae, the largest movable vertebrae (the cervical are the smallest). Below the lumbar vertebrae, the spine terminates with two groups of vertebrae fused into single bones: the sacrum, composed of five vertebrae, and the coccyx, composed of four vertebrae. Viewed from the side of the body, the spine has the shape of a gentle double S curve.
Malformations of the Spine. Of the various types of spinal malformations, some are congenital and others the result of postural defects or injuries. spina bifida is congenital. kyphosis may occasionally be congenital but is more often caused by one of the diseases that attack the structure of the bones. The most common of these is pott's disease, or tuberculosis affecting the vertebrae and soft tissues of the spine. Another is osteitis deformans, a type of bone inflammation in which parts of the bone are replaced by softer tissue. scoliosis is a curvature of the spine toward one side.
cervical spine that portion of the spine comprising the cervical vertebrae.
lumbar spine that portion of the spine comprising the lumbar vertebrae.
thoracic spine that part of the spine comprising the thoracic vertebrae.

ver·te·bral col·umn

[TA]
the series of vertebrae that extend from the cranium to the coccyx, providing support and forming a flexible bony case for the spinal cord.

backbone

(băk′bōn′)
n.
1. The vertebrate spine or spinal column.
2. Chemistry The main chain of atoms in a polymer.

back′boned′ adj.

backbone

the vertebral column.

backbone

Vox populi Vertebral column, see there.

ver·te·bral col·umn

(vĕr'tĕ-brăl kol'ŭm) [TA]
The series of vertebrae that extend from the cranium to the coccyx, providing support and forming a flexible bony case for the spinal cord.
Synonym(s): columna vertebralis [TA] , backbone, rachis, spina, spinal column, spine (2) .

backbone

The vertebral column or spine.

backbone

see VERTEBRAL COLUMN.

backbone

the vertebral column.

Patient discussion about backbone

Q. Anyone have knowledge of cancer in the spine? Doctors think my 40 year old brother has. My brother has been undergoing test and treatnment for back problems since a vehicle accident in August. The did a test last week and Monday said they saw 4 nodules they think are cancer, his doctor said everytime he had seen this it was cancer. I am devestated right now but trying to stay positive. I am sure you will notice it on the site b/c I know it is affecting me and the stress and worry has the fibromyalgia kicking in at full speed:-( PLEASE anything you can tell me would be a help!

A. Thank you for the answer and the prayers!

Q. I have hurt my cervical spine and shoulder in a rear end car crash in July. Why does it still hurt?

A. Spine and back injuries are known to to be causing a lot of pain and discomfort and for a long period of time. You should try and do some mellow exercise and physiotherapy that might help you a lot. If the pain is unbarable, you should consult your doctor about using pain medications.

Q. Has anyone had a spine fusion that failed? Or hardware that failed?

A. Haven't experienced it myself, but here (http://www.spine-health.com/forum/treatments/back-surgery-and-neck-surgery) you may find a discussion about it.

More discussions about backbone
References in periodicals archive ?
About 150 volunteers are expected today at the Backbone Trail restoration for National Trails Day.
17-mile segment from the Backbone Trailhead on Yerba Buena Road to the Ray Miller Trailhead in Point Mugu State Park (great views of the Channel Islands and entertaining rock formations, including the upper ramparts of Boney Mountain - a wall of wonder that looks like a scattered junkyard of random asteroid debris; 2.
Mar and the foundation's executive director, Ruth Kilday, developed Backbone Trail Month in the early 1990s to recognize recent construction of trail segments and new land acquisitions.
The bill earmarks about $400 million for special projects, including the Backbone Trail.
For that reason, the nonprofit Mountains Conservancy Foundation organized the Backbone Trail Completion Campaign.
The availability of its Intrepid 10000 backbone director and Eclipse 2640 SAN router are the first of many executions for the coming year.
The result of the test means that, in addition to Japanese HDTV operators, media companies in the region and across the globe, can leverage this platform for the transmission of high-definition content over Asia Netcom's global Internet backbone," said Hideo Ishii, Asia Netcom Japan's Director of IP architecture.
As the backbone of the Global Enterprise Data Center, the Intrepid i10K enables customers to simplify their network designs and seamlessly expand for future growth without rip and replace of their existing environments," said Patrick Harr, vice president of director platforms, McDATA.
The technology has integrated effectively into our existing infrastructure," said Jason McKnespiey of B&Q plc, the United Kingdom's leading and international "home improvement" retail company and early ship Intrepid i10k Backbone Director customer.
Although Mzima interconnects with many backbones and broadband ISPs in every city, sometimes higher performance can be obtained by carrying traffic directly on its own OC-48 backbone rather than relying on possibly congested broadband ISP links.
ShadowWorks Backbone Management Platform and Network Performance Profiler Deliver First-of-its-kind SAN Performance Index
a pioneer in the emerging storage network backbone market, today unveiled the industry's first backbone-class Storage Area Network (SAN) switch, the Shadow 14000(TM).