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they will have production of ionically charged wear particles
3%
128/4304
there is a higher cancer risk than with metal-on-polyethylene THA
77%
3310/4304
they will have elevated levels of cobalt and chromium in the serum
120/4304
they will have elevated levels of cobalt and chromium in the urine
7%
295/4304
there is a higher frictional torque than with ceramic on ceramic THA
10%
434/4304
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Metal-on-metal articulations in THA are characterized by ionically charged wear particles. Elevated serum and urine concentrations of metallic elements including chromium, cobalt, and molybdenum are found in patients with metal-on-metal joint replacements as compared with controls. To date, there is no correlation between metal serum levels and cancer risk. As such, the link between metal on metal arthroplasty and an elevated cancer risk has not been supported by hard data. Finally, metal-on-metal THA has higher frictional torque than ceramic on ceramic THA. The reference by Brockett et al is a biomechanical analysis of the friction of various hip arthroplasty components. Ceramic on ceramic was found to have the lowest coefficient of friction, followed by ceramic on metal.
3.4
(32)
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