Vitallium


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Vitallium

 

a cobalt alloy consisting of 0.2-0.35 percent C, 1.5-3.5 percent Ni, 25-30 percent Cr, 4.5-6.5 percent Mo, up to 2 percent Fe, 0.3 percent Mn, and 0.6 percent Si. VitalHum is used as a cast heat-resistant material for small and medium (up to 20-25 kg) castings of components of gas turbines (including moving blades), which are used at temperatures up to 800° C.

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As scientific experimentation on tissue biocompatibility and bone material interaction continued, Vitallium (cobalt-chromium-molybdenum alloy) was proposed by Venable, Strock and Beach and became the first long-term successful implant material in 1930's [3,5].
The idea of using screws fixed to bone to obtain absolute anchorage goes back to 1945, when Gainsforth and Higley (12) placed vitallium screws in the ascending ramus of 6 dogs to retract their canines.
This was initially effective, but the glass proved too fragile and was replaced by Pyrex and then, in 1938, by vitallium.
1) In 1951, Neer developed an unconstrained Vitallium prosthesis for the treatment of proximal humerus fractures.
44] evaluated the biocompatibility of Nitinol screws by comparison with vitallium, CP titanium, duplex austenitic-ferritic stainless steel and stainless steel 316L and observed a slower osteogenesis process with no close contact between implant and bone in NiTi screws compared with the others.
Vitallium bone screws and appliances for treatment of fracture of mandible.
This single-unit prosthesis, which replicated the proximal humerus anatomy, was made of vitallium.
This led to use of other materials, such as Viscaloid (a celluloid derivative, 1925), Pyrex (1933), Bakelite (1939), and later that year, an alloy of Cobalt-Chromium is called Vitallium (1936).
The patellofemoral replacement McKeever screw-on Vitallium patellar shell was introduced in 1955.
3], required to change Bioglass coated deformities vitallium Table 2: Characteristic Features of Ceramic Biomaterials Young's Compressive Bond Material Modulus Strength strength (GPa) (MPa) (GPa) Inert 380 4000 300-400 [Al.
Coughlin and Abdo used a Vitallium plate in 58 feet due to its low profile.
Coughlin M, Abdo R: Arthrodesis of the first metatarsophalangeal joint with Vitallium plate fixation.