These results must be confirmed by further studies, providing better information and more reliable and biocompatible materials. After MoM hip resurfacing, higher cobalt and chromium concentrations in blood have been associated with structural changes in visual neurological pathways ( 12 study of 29 patients, mean age 59 years). In spite of the cobalt values stand below the concentration generally considered dangerous, the difference between the two examined groups points out that a risk exists for the health of these patients. Patients who have a Stryker hip implant may experience a variety of negative side effects and symptoms, including chronic pain, joint dislocation and device. What if, after a little while, you notice that the surgical site is swollen, that movement hurts, that something feels wrong deep inside Metal-on-metal implants are notorious for the problems they create and have been the subject of numerous product recalls. What are the warning signs pain in your groin, hip or leg swelling at or near your hip joint a limp or problems walking grinding or clunking from the joint. The one case of MoM total hip arthroplasty cobalt toxicity of cardiac. The results obtained confirm the presence of an increase of cobalt inthe blood of patients after total hip replacement, while the chromium levels are almost alike: average values in patients operated are 4.1 +/- 1.5 microg/L for cobalt (0.3 +/- 0.1 microg/L in the control group) and 4.5 +/- 2.9 microg/L for chromium (4.7 +/- 2.4 microg/L in the control group). Systemic toxic side effects have been associated with excessive metal ion release. This is also due to the fact that cobalt and chromium blood levels can change depending on physical and working activity, individual feeding and metabolism. Soft tissue damage may lead to pain, implant loosening, device failure, and the need for revision surgery (the old device is removed and replaced with another one). We report significant cobalt poisoning from a damaged hip replacement with cobalt containing implant and a slow abrasion of the metal by residual ceramic particles. Besides the symptoms associated with other forms of metallosis, cobalt toxicity can cause patients to suffer from fever, inflammation, and low thyroid levels. In literature there is little data and not completely indicative, in the biological fluids and organs the amounts of released metals are different. Cobalt and chromium release in patients undergone a metal-on-metal total hip replacement (THR) is a matter recently discussed and whose we do not have enough information about it yet.
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