| intervertebral disk displacement | An intervertebral disk in which the nucleus pulposus has protruded through surrounding fibrocartilage. This occurs most frequently in the lower lumbar region. (12 Dec 1998) |
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| injury of intervertebral disk | traumatic cervical discopathy |
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| intervertebral disk | <anatomy> The intervertebral discs or nucleus pulposus are a fibro-cartilaginous disc that lie between the vertebral bodies in the spine. These disks are composed of a central gelatinous-like material that provide a cushioning or shock absorbing quality to the spinal column to axial stress. Discs may herniate or rupture, resulting in a condition known as a radiculopathy. (27 Sep 1997) |
| intervertebral disk chemolysis | The dissolving of the nucleus pulposus of a displaced intervertebral disk, usually by the direct injection of a proteolytic enzyme, especially chymopapain, into the diseased disk. (12 Dec 1998) |
| affect displacement | A shift of feeling from the object originally arousing it to some associated object. (05 Mar 2000) |
| vertical displacement event | Disruption which occurs because plasma is not adequately stabilised against vertical motions. (09 Oct 1997) |
| mesial displacement | Malposition of a tooth mesial to normal, in an anterior direction following the curvature of the dental arch. Synonym: mesial displacement, mesioplacement. (05 Mar 2000) |
| displacement | 1. The act of displacing, or the state of being displaced; a putting out of place. The quantity of anything, as water, displaced by a floating body, as by a ship, the weight of the displaced liquid being equal to that of the displacing body. 2. <psychology> The process by which an emotional or behavioural response that is appropriate for one situation appears in another situation for which it is inappropriate. 3. <chemistry> The process of extracting soluble substances from organic material and the like, whereby a quantity of saturated solvent is displaced, or removed, for another quantity of the solvent. 4. <mechanics> Piston displacement, the volume of the space swept through, or weight of steam, water, etc, displaced, in a given time, by the piston of a steam engine or pump. Origin: Cf. F. Deplacement. Source: Websters Dictionary (03 Jul 1999) |
| displacement analysis | General term for an assay in which a binder competes for labelled versus unlabelled ligand; following separation of free and bound ligand, the ligand (the analyte assayed) is quantitated by relating bound and unbound ratios to known standards. See: enzyme-linked immunosorbent assay, radioreceptor assay, immunoassay, enzyme-multiplied immunoassay technique, radioimmunoassay. Synonym: displacement analysis, saturation analysis. (05 Mar 2000) |
| displacement loop | <molecular biology> A structure that can sometimes be seen on DNA which forms when a small area of the double-stranded molecule comes apart and becomes two single strands. The result is a structure shaped like the letter D. Single-stranded binding proteins are usually present to hold the strands apart for the purpose of DNA replication. (09 Oct 1997) |
| displacement threshold | The least distinguishable break in the contour of a line. (05 Mar 2000) |
| double displacement mechanism | A special multisubstrate reaction in which, for a two-substrate, two-product (i.e., bi-bi) system, an enzyme reacts with one substrate to form a product and a modified enzyme, the latter then reacting with a second substrate to form a second, final product, and regenerating the original enzyme. An example of such a mechanism is found in the aminotransferases. More complex ping-pong mechanisms exist for enzymes having more than two substrates. Synonym: double displacement mechanism. (05 Mar 2000) |
| tissue displacement | The change in the form or position of tissues as a result of pressure. (05 Mar 2000) |
| annulus fibrosus of intervertebral disc | The ring of fibrocartilage and fibrous tissue forming the circumference of the intervertebral disc; surrounds the nucleus pulposus, which is prone to herniation when the annulus fibrosus is compromised. Synonym: annulus fibrosus disci intervertebralis, annulus fibrosus, fibrous ring of intervertebral disc, fibrous ring. (05 Mar 2000) |
| intervertebral | <anatomy> Situated between two contiguous vertebrae. (18 Nov 1997) |
| intervertebral cartilage | <anatomy> The intervertebral discs or nucleus pulposus are a fibro-cartilaginous disc that lie between the vertebral bodies in the spine. These disks are composed of a central gelatinous-like material that provide a cushioning or shock absorbing quality to the spinal column to axial stress. Discs may herniate or rupture, resulting in a condition known as a radiculopathy. (27 Sep 1997) |