Is this 120 nanometer thin layer of a cobalt-chromium-tantalum alloy, which has small magnetic domains, or regions, whose direction can be manipulated via external magnetic fields.
医学百科 The Medicine Book (Big Ideas Simply Explained)
After many years of research and several false starts, Charnley used a cobalt-chrome alloy ball-ended stem fitted into the femur and a socket made of a type of high-density polyethylene.
医学百科 The Medicine Book (Big Ideas Simply Explained)
Gonston attached a curved cobalt-chromium alloy component to the end of the femur, which rocked on a polyethylene platform attached to the tibia, replicating the natural bending and extension of the knee.