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Traction Devices refers to the set of mechanisms for straightening broken bones or relieving pressure on the skeletal system. There are two types of traction: skin traction and skeletal traction. It is largely replaced now by more modern techniques, but certain approaches are still used today, Bryant's traction, Buck's traction - hip fractures, Dunlop's traction - humeral fractures in children, Russell's traction and Milwaukee brace - traction Milwaukee brace.
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Thermography, thermal imaging, or thermal video, is a type of infrared imaging science. Thermographic cameras detect radiation in the infrared range of the electromagnetic spectrum (roughly 900-14,000 nanometers or 0.9-14 µm) and produce images of that radiation. Since infrared radiation is emitted by all objects based on their temperatures, according to the black body radiation law, thermography makes it possible to see one's environment with or without visible illumination. The amount of radiation emitted by an object increases with temperature, therefore thermography allows one to see variations in temperature. When viewed by thermographic camera, warm objects stand out well against cooler backgrounds; humans and other warm-blooded animals become easily visible against the environment, day or night. As a result, thermography's extensive use can historically be ascribed to the military and security services.Thermal imaging photography finds many other uses. For example, firefighters use it to see through smoke, find persons, and localize the base of a fire. With thermal imaging, power lines maintenance technicians locate overheating joints and parts, a telltale sign of their failure, to eliminate potential hazards. Thermal imaging cameras are also installed in some luxury cars to aid the driver. Some physiological activities, particularly responses, in human beings and other warm-blooded animals can also be monitored with thermographic imaging.