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Orthopedics. [edit on Wikidata] Halo-gravity traction (HGT) is a type of traction device utilized to treat spinal deformities such as scoliosis, [1][2] congenital spine deformities, cervical instability, basilar invagination, and kyphosis. [3] It is used prior to surgical treatment to reduce the difficulty of the following surgery and the need ...
Wrought iron. Spring steel is a name given to a wide range of steels [1] used in the manufacture of different products, including swords, saw blades, springs and many more. These steels are generally low-alloy manganese, medium-carbon steel or high-carbon steel with a very high yield strength. This allows objects made of spring steel to return ...
Bone (corsetry) In corsetry, a bone is one of the rigid parts of a corset that forms its frame and gives it rigidity. The purpose of the boning in a corset varies slightly from era to era. Generally, the cinching/shaping properties of corsetry puts strain onto the fabric from which the corset is made. The boning supports the desired shape and ...
Deformation are changes in the relative position between internals points on the object, excluding rigid transformations, causing the body to change shape or size. Strain is the relative internal deformation, the dimensionless change in shape of an infinitesimal cube of material relative to a reference configuration.
The Ilizarov apparatus is a specialized external fixator of modular construction, composed of rings (stainless steel, titanium) that are transfixed to healthy bone with Kirschner wires and pins of heavy-gauge stainless steel, and immobilised in place with additional rings and threaded rods that are attached with and through adjustable nuts.
Anglepoise model 1227 from 1935. A balanced-arm lamp, sometimes called a floating arm lamp, is a lamp with an adjustable folding arm which is constructed such that the force due to gravity is always counteracted by springs, regardless of the position of the arms of the lamp. Many lamp brands (such as the Anglepoise, originator of the concept ...
v. t. e. In physics and materials science, plasticity (also known as plastic deformation) is the ability of a solid material to undergo permanent deformation, a non-reversible change of shape in response to applied forces. [1][2] For example, a solid piece of metal being bent or pounded into a new shape displays plasticity as permanent changes ...
Madelung's deformity is usually characterized by malformed wrists and wrist bones and is often associated with Léri-Weill dyschondrosteosis. It can be bilateral (in both wrists) or just in the one wrist. It has only been recognized within the past hundred years. Named after Otto Wilhelm Madelung (1846–1926), a German surgeon, who described ...