fusion /fu·sion/ (fu´zhun)
fusion
fusion,
fusion
Patient discussion about fusion.
1. the act or process of melting.
2. the merging or coherence of adjacent parts or bodies.
3. the coordination of separate images of the same object in the two eyes into one.
4. the operative formation of an ankylosis or arthrosis.
anterior interbody fusion spinal fusion in the lumbar region using a retroperitoneal approach, with immobilization by bone grafts on the anterior and lateral surfaces.
diaphyseal-epiphyseal fusion operative establishment of bony union between the epiphysis and diaphysis of a bone.
spinal fusion operative immobilization or ankylosis of two or more vertebrae, often with diskectomy or laminectomy.
fu·sion (fy  zh n)n. 1. The act or procedure of liquefying or melting by the application of heat. 2. The merging of different elements into a union, as of vertebrae. 3. The mechanism by which both eyes blend slightly different images from each eye into a single image. 4. The growing together of two or more teeth as a result of the abnormal union of their formative organs. 5. A nuclear reaction in which nuclei combine to form more massive nuclei with the simultaneous release of energy. |
fusion
[fyo̅o̅′zhən]
Etymology: L, fusio, outpouring
1 the joining into a single entity, as in optic fusion.
2 See also ankylosis.
3 the surgical joining of two or more vertebrae, performed to stabilize a segment of the spinal column after severe trauma, herniation of a disk, or degenerative disease. Under general anesthesia the cartilage pads are removed from between the posterior parts of the involved vertebrae. Bone chips are cut from one of the patient's iliac crests and inserted in place of the cartilage, fusing the articulating surfaces into one segment of bone.
4 (in psychiatry) the tendency of two people who are experiencing an intense emotion to unite.
fusion,
n 1. the uniting or joining together of two or more entities. The fusion temperature of an alloy lies just below the lower limit of its melting range, which is particularly important in soldering operations because temperatures near or above fusion temperature will decrease ductility.
2. the process of producing fused teeth.
3. during prenatal development, the joining of embryonic tissues of two separate surfaces or the elimination of a groove between two adjacent swellings. See also crescence and range, melting.
2. the process of producing fused teeth.
3. during prenatal development, the joining of embryonic tissues of two separate surfaces or the elimination of a groove between two adjacent swellings. See also crescence and range, melting.
fusion, nuclear,
n the union of atomic nuclei to form heavier nuclei, resulting in the release of enormous quantities of energy when certain light elements unite.
fusion of metal,
n See metal, fusion of.
Fusobacterium
(fū´zōbaktir´ē
m),
n a genus of bacteria containing gram-negative, nonsporeforming, obligately anerobic rods that produce butyric acid as a major metabolic product. These organisms are normally in the oral flora; some species are pathogenic.
m), n a genus of bacteria containing gram-negative, nonsporeforming, obligately anerobic rods that produce butyric acid as a major metabolic product. These organisms are normally in the oral flora; some species are pathogenic.
)
Fused teeth.
fusion
1. the act or process of melting.
2. the merging or coherence of adjacent parts or bodies.
3. the operative formation of an ankylosis or arthrosis.
diaphyseal-epiphyseal fusion
operative establishment of bony union between the epiphysis and diaphysis of a bone.
nerve fusion
nerve anastomosis done to induce regeneration for resupplying empty tracts of a nerve with new growth of fibers.
nuclear fusion
the fusion of two atomic nuclei to form a single heavier nucleus, resulting in the release of enormous amounts of energy.
spinal fusion
surgical creation of ankylosis between contiguous vertebrae; spondylosyndesis.
fusion
The act or process of mixing or uniting.
binocular fusion See sensory fusion.
central fusion See sensory fusion.
chiastopic f . Fusion obtained by voluntary convergence on two targets separated in space and such that the right eye fixates the left target and the left eye the right target. This is often facilitated by fixating a small mark above a single aperture placed in front of the two targets and then slowly shifting one's gaze to the targets. The procedure is aimed at improving positive fusional convergence. See fusional convergence; orthopic fusion.
critical fusion frequency See critical fusion frequency.
first-degree fusion; flat fusion See Worth's classification of binocular vision.
fusion field An area around the fovea of each eye within which the fusion reflex is initiated. If the disparate images fall within this area motor fusion will occur, but if the disparity is too great there will be no fusional movement. This field is much larger horizontally than vertically.
flat fusion Binocular fusion in which the single percept is two-dimensional and without stereoscopic effect. Syn. second-degree fusion. See Worth's classification of binocular vision.
fusion lock See binocular lock; associated heterophoria.
motor fusion One of the components of convergence in which the eyes move until the object of regard falls on corresponding retinal areas (e.g. the foveas) in response to disparate retinal stimuli. Syn. disparity vergence; fusion reflex. See fusional convergence; sensory fusion; retinal corresponding points; vergence facility.
orthopic fusion Fusion obtained by voluntary divergence on two targets separated in space and such that the right eye fixates the right target and the left eye the left target. This is often facilitated by looking beyond the targets and then slowly shifting one's gaze to the targets through double apertures placed in front of them. This procedure is aimed at improving negative fusional convergence. See fusional convergence; chiastopic fusion.
peripheral fusion See sensory fusion.
fusion reflex See motor fusion.
second-degree fusion See flat fusion.
sensory fusion The neural process by which the images in each retina are synthesized or integrated into a single percept. In normal binocular vision, this process occurs when corresponding (or nearly corresponding) regions of the retina are stimulated. This process can occur when the images are either in the central part of the retinae (central fusion) or in the peripheral part of the retinae (peripheral fusion). Syn. binocular fusion. See anaglyph; fusional convergence; haploscope; SILO response; retinal corresponding points; random-dot stereogram; bar reading test; diplopia test; Worth's four dot test.
third-degree fusion See Worth's classification of binocular vision.
binocular fusion See sensory fusion.
central fusion See sensory fusion.
chiastopic f . Fusion obtained by voluntary convergence on two targets separated in space and such that the right eye fixates the left target and the left eye the right target. This is often facilitated by fixating a small mark above a single aperture placed in front of the two targets and then slowly shifting one's gaze to the targets. The procedure is aimed at improving positive fusional convergence. See fusional convergence; orthopic fusion.
critical fusion frequency See critical fusion frequency.
first-degree fusion; flat fusion See Worth's classification of binocular vision.
fusion field An area around the fovea of each eye within which the fusion reflex is initiated. If the disparate images fall within this area motor fusion will occur, but if the disparity is too great there will be no fusional movement. This field is much larger horizontally than vertically.
flat fusion Binocular fusion in which the single percept is two-dimensional and without stereoscopic effect. Syn. second-degree fusion. See Worth's classification of binocular vision.
fusion lock See binocular lock; associated heterophoria.
motor fusion One of the components of convergence in which the eyes move until the object of regard falls on corresponding retinal areas (e.g. the foveas) in response to disparate retinal stimuli. Syn. disparity vergence; fusion reflex. See fusional convergence; sensory fusion; retinal corresponding points; vergence facility.
orthopic fusion Fusion obtained by voluntary divergence on two targets separated in space and such that the right eye fixates the right target and the left eye the left target. This is often facilitated by looking beyond the targets and then slowly shifting one's gaze to the targets through double apertures placed in front of them. This procedure is aimed at improving negative fusional convergence. See fusional convergence; chiastopic fusion.
peripheral fusion See sensory fusion.
fusion reflex See motor fusion.
second-degree fusion See flat fusion.
sensory fusion The neural process by which the images in each retina are synthesized or integrated into a single percept. In normal binocular vision, this process occurs when corresponding (or nearly corresponding) regions of the retina are stimulated. This process can occur when the images are either in the central part of the retinae (central fusion) or in the peripheral part of the retinae (peripheral fusion). Syn. binocular fusion. See anaglyph; fusional convergence; haploscope; SILO response; retinal corresponding points; random-dot stereogram; bar reading test; diplopia test; Worth's four dot test.
third-degree fusion See Worth's classification of binocular vision.
fusion
Medtalk The joining of ≥ 2 distinct entities. See Binaural fusion Orthopedics Operative joining of 2 bones or a single bone with a pseudarthrosis. See Pseudarthrosis, Spinal fusion Psychoanalysis The joining of instincts and objects
Sports medicine The trendy combination of 2 or more types of exercise–eg, martial arts, swimming and free weights, theoretically to improve fitness. See Exercise.
Patient discussion about fusion.
Q. I'm having a lot of pain in my right leg after back fusion surgery. Any ideas why? This was my third back surgery. The doctor fused 2 levels. Before surgery I was having pain in my left leg. It is now fine. My right leg however is giving me fits. I've been on Neurontin (Gabopentin is the generic) for 4 weeks now and have very little relief.
A. i know from my dad experience that sometime after the surgery there's a problem with blood circulation in the legs. If that's really what is happening to your leg – very likely that it's painful. You can help your circulation by doing your leg exercises and walking. You can also wear sequential compression boots that automatically inflate and deflate, helping to pump the blood in your legs back up to your heart.
But that's guessing- I would have a talk with the surgeon that treated you…
But that's guessing- I would have a talk with the surgeon that treated you…
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.
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