Metallosis is a Serious Concern for DePuy ASR XL Hip Patients

A grave concern for those patients who’ve received the recalled DePuy ASR XL hip implants concerns periprosthetic metallosis or metal poisoning that results from the wear of the metal-on-metal DePuy hip implant. The hip implants design allows metal to rub against metal which may lead to tiny metal particles falling into the bloodstream. Such metallosis can cause tissue and organ damage and makes any revision surgery very difficult.
According to Dr. John Tower whose study on this subject was published in the Journal of Bone and Joint Surgery, “A serum cobalt level of > 7 mg/L indicates possible periprosthetic metallosis. A normal serum cobalt level is .19 mg/L and 95% of those who are unexposed to cobalt have a value of <.41 mg/L. A serum cobalt level of > 1 mg/L indicates excessive cobalt exposure, and levels of >5 mg/L are considered toxic.”
A specific blood test must be administered in order to determine if the patient suffers from periprosthetic metallosis. While there are no clear warning signs, patients may experience tinnitus, vertigo, blindness, deafness, peripheral neuropathy, headaches, optic nerve atrophy, convulsions, cardiomyopathy, and or hypothyroidism.
More than 34,000 DePuy ASR XL hips have been implanted in the US. Patients who experience metallosis as a result of the metal-on-metal hip implant may suffer cardiac or neurological damage as well.