Consequences of exposure to peri-articular injections of micro- and nano-particulate cobalt-chromium alloy.
SourceInstitute of Medical & Biological Engineering, University of Leeds, Leeds, UK.
Microparticles are particles between 0.1 and 100 m in size. Commercially available microparticles are available in a wide variety of materials, including ceramics, glass, polymers, and metals. Microparticles encountered in daily life include pollen, sand, dust, flour, and powdered sugar.
In nanotechnology, a particle is defined as a small object that behaves as a whole unit with respect to its transport and properties. Particles are further classified according to diameter. Coarse particles cover a range between 10,000 and 2,500 nanometers. Fine particles are sized between 2,500 and 100 nanometers. Ultrafine particles, or nanoparticles are sized between 1 and 100 nanometers.