a circular or rounded flat plate; often spelled disc in names of anatomic structures.
articular disk a pad of fibrocartilage or dense fibrous tissue present in some synovial joints.
Bowman's disk one of the flat plates making up a striated muscle fiber.
) (germinal disk
) a flattened round bilaminar plate of cells in the blastocyst
of a mammal, where the first traces of the embryo are seen; called also embryonic
or germinal area
the layer of fibrocartilage between the bodies of adjoining vertebrae
; see also herniated disk
Merkel's d's small cup-shaped tactile receptors in the skin that are particularly sensitive to continuous pressure.
the intraocular part of the optic nerve formed by fibers converging from the retina and appearing as a pink to white disk in the retina; there are no sensory receptors in the region and hence no response to stimuli. Called also blind spot
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.
slipped disk (slĭpt)
Protrusion of a part of an intervertebral disk through the fibrocartilage, occurring usually in the lower lumbar region and often causing back pain or sciatica.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.
slipped disk A popular term for any anatomic defect—bulge, degeneration, herniation, prolapse, rupture or tear—in the intervertebral disc, which may be accompanied by symptoms of nerve impingement, including pain and paraesthesias.
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.
slipped disk Herniated disk, see there.
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.
Patient discussion about slipped disk
Q. I have a low back pain that radiates to my leg when i pick up stuff. Is it a disc herniation? I am a 43 years old bank teller. During the past 5 months I've suffered from a low back pain. The pain is not very strong, but it gets much worse while doing physical activity. When i walk or lift heavy things the pain is even stronger, and it radiates to my left leg. Can it be signs for disc herniation?
A. It's possible that you have a nerve impingement from a disc herniation, but not necessarily so. What you need to know is that even if you have a herniated disc, the question is what would the recommended treatment be? More discussions about slipped disk
90% or more of herniated discs resolve without surgical treatment within 6 months. MRI imaging is generally only indicated if one is considering surgery; in other words, your pain and neurological status is such that surgery is clinically indicated. Then, an MRI may be helpful for the surgeon. If surgery is not indicated based on clinical/symptoms, then it probably is unwise to get an MRI. They often show abnormalities that are simply 'red herrings' and often prompt people to proceed with surgery that really is not needed. Beware!
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