Metal-on-metal artificial hips were originally thought to be more durable and longer lasting than the traditional hip implants. It was believed that the mechanical hip implants would reduce wear and lower the rates of failure and dislocation. With the advent of multiple medical studies, it was found that metal-on-metal hips were no more reliable than the traditional hip implants. However, danger of metal-on-metal hip implants subjected patients to severe side effects. One of those side effects is metallosis poisoning.
Many of the metal-on-metal hip implants contain cobalt and chromium; when broken down in the blood stream, these can cause irreversible damage to patients. The metal-on-metal hip implants, when in regular use, grind or shred metallic particles into the surrounding body tissues and spread throughout the bloodstream. It was found in 2010 that cobalt and chromium ions were frequently found in the blood and urine of hip implant patients. Metallosis destroys the surrounding tissue.
In addition, the metallic particles can lodge in other organs of the body. It has been reported that metallic particles have been found in bone marrow, in the liver, kidneys and bladder. In fact, studies have revealed that high levels of metallic ions in the body can increase the risk of different cancers.