scholarly journals Simple fixation and removal of dacryocystorhinostomy tube

Eye ◽  
2017 ◽  
Vol 32 (2) ◽  
pp. 481-482
Author(s):  
K Vahdani ◽  
G Albanese ◽  
V T Thaller
Keyword(s):  
Simple Fixation

Total hip replacement: modes of failure

2011 ◽  
Author(s):  
Rob Pollock
Keyword(s):  
Aseptic Loosening ◽  
Success Rates ◽  
Total Hip ◽  
Reactive Protein ◽  
Modes Of Failure ◽  
Total Hip Replacements ◽  
Hip Replacements ◽  
Simple Fixation

♦ Total hip replacements (THRs) may fail in various ways. They may become infected, they may be subject to aseptic loosening, they may dislocate, or a periprosthetic fracture may occur. The patient with a failed THR must be thoroughly assessed before treatment is contemplated♦ Infection may be acute or chronic. Assessment involves clinical assessment, plain radiographs, blood tests (C-reactive protein and erythrocyte sedimentation rate), hip aspiration, and, sometimes, nuclear medicine. The acutely infected hip may be treated with one-stage revision. This involves thorough lavage, debridement, and exchange of all modular components as well as long-term antibiotic therapy. The gold standard of treatment for a chronically infected THR is a two-stage revision. Success rates of 80–90% can be expected♦ Aseptic loosening typically occurs at the cement bone interface in hips where a metal-on-polyethylene bearing couple has been used. Bone resorption takes place as a result of an inflammatory response to small wear particles. After infection has been excluded the treatment of choice is a single-stage revision♦ Dislocation may be the result of patient factors, implant factors, or poor surgical technique. It is imperative for the clinician to minimize the risk by selecting patients carefully, using the correct combination of implants and performing surgery accurately♦ The management of periprosthetic fractures depends on how well the implants are fixed and quality of bone stock. Treatment ranges from simple fixation of the fracture through to revision augmented with strut allograft.

The Effects of Foveal Load on Peripheral Visual Sensitivity

1986 ◽  
Vol 30 (6) ◽  
pp. 608-610 ◽  
Author(s):  
Edward J. Rinalducci ◽  
Paul N. Rose
Keyword(s):  
Visual Field ◽  
Visual Sensitivity ◽  
Tracking Task ◽  
Horizontal Meridian ◽  
Experimental Conditions ◽  
First Order ◽  
Order Rate ◽  
Light Flashes ◽  
Simple Fixation

The main objective of the research was to investigate the effects of load on peripheral sensitivity in the visual field. Foveal load was varied by using simple fixation of a vs. a first-order (rate) compensatory tracking task. Peripheral sensitivity was determined simultaneously for light flashes located at different eccentricities along the horizontal meridian. The effects of training on the tracking task were also examined. In general, the results showed no losses in peripheral sensitivity under the experimental conditions employed, contrary to data from previous studies.

scholarly journals Of maps and grids

2021 ◽  
Vol 2021 (2) ◽  
Author(s):  
Matteo Grasso ◽  
Andrew M Haun ◽  
Giulio Tononi
Keyword(s):  
Cortical Area ◽  
Spatial Information ◽  
Functional Information ◽  
Retinal Position ◽  
Phenomenal Properties ◽  
Cortical Areas ◽  
The Brain ◽  
Integrated Information Theory ◽  
Information Processing Approach ◽  
Simple Fixation

Abstract Neuroscience has made remarkable advances in accounting for how the brain performs its various functions. Consciousness, too, is usually approached in functional terms: the goal is to understand how the brain represents information, accesses that information, and acts on it. While useful for prediction, this functional, information-processing approach leaves out the subjective structure of experience: it does not account for how experience feels. Here, we consider a simple model of how a “grid-like” network meant to resemble posterior cortical areas can represent spatial information and act on it to perform a simple “fixation” function. Using standard neuroscience tools, we show how the model represents topographically the retinal position of a stimulus and triggers eye muscles to fixate or follow it. Encoding, decoding, and tuning functions of model units illustrate the working of the model in a way that fully explains what the model does. However, these functional properties have nothing to say about the fact that a human fixating a stimulus would also “see” it—experience it at a location in space. Using the tools of Integrated Information Theory, we then show how the subjective properties of experienced space—its extendedness—can be accounted for in objective, neuroscientific terms by the “cause-effect structure” specified by the grid-like cortical area. By contrast, a “map-like” network without lateral connections, meant to resemble a pretectal circuit, is functionally equivalent to the grid-like system with respect to representation, action, and fixation but cannot account for the phenomenal properties of space.

A simple fixation method for unstable bony mallet finger

2004 ◽  
Vol 29 (6) ◽  
pp. 1051-1055 ◽  
Author(s):  
Alejandro Badia ◽  
Felix Riano
Keyword(s):  
Fixation Method ◽  
Mallet Finger ◽  
Simple Fixation

Simple Fixation Method for Unstable Zygomatic Arch Fracture Using Double Kirschnerʼs Wires

1998 ◽  
Vol 101 (5) ◽  
pp. 1351-1354
Author(s):  
Dae-Hyun Lew ◽  
Beyoung-Yun Park ◽  
Hoon-Bum Lee ◽  
Jae-Duk Lew
Keyword(s):  
Zygomatic Arch ◽  
Fixation Method ◽  
Simple Fixation
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