Low wear and friction in alumina/alumina total hip joints: A hip simulator study

摘要: We studied the wear of state-of-the-art alumina/alumina total hip joints with uniaxial five-station, and three-axis single-station joint simulators Helsinki University Technology. The diameters were 26, 28 32 mm. Visual examination weighing components showed no wear. Scanning electron microscopy that (a) marks slight, consisting removal grains, multidirectional grooving mild abrasion, (b) mechanisms similar to those seen in removed from patients, (c) there was marked difference specimens worn vs. simulator. coefficient friction measured throughout 5 million cycle test average value 0.007. conclude had low under present conditions. results are promising, since minimal is one prerequisites for long-term success prosthetic joints.