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Oct 23, 2011 · Metal Allergy Testing
One patient with severe cobalt poisoning had levels of 6.6 micrograms/deciliter. That's nearly three hundred and fifty times the mean average. The dangers of cobalt levels so high were quite apparent: in addition to hip pain, the patient showed declining cognitive function, was losing control of his senses like hearing and sight, suffered from seizures, heart failure, and multiple other problems.
Metal Allergy in Joint Replacement - …
For DePuy hip implant recipients, it can also mean that future hip revisions have a lower chance of success. Excess amounts of cobalt in the bloodstream lead to metal sensitivity and , which can seriously damage surrounding tissue and make a second implant less likely to succeed.
Parts & Materials | Dr. Bal Orthopedics
Like all metals, titanium releases particles through corrosion. These metals become ions in the body and bind to body proteins. For those who react, the body’s immune system will attack this structure. This starts a chain reaction which can lead to many symptoms including chronic fatigue syndrome. The MELISA test is the only scientifically-proven test which can objectively diagnose titanium allergy and measure its severity.
This ball is made of a cobalt-chrome alloy, or ceramic, ..
Some implants are cast, and others are forged. Some stems are made of titanium and others may be made from cobalt chrome or other alloys. Some stems have a very low modulus of elasticity, which means they do not bend very much, and can have mechanical implications. Some stems have a clothespin design at the bottom to allow for greater flexibility in the implant and less thigh pain. Some designs are too stiff or too solid, resulting in stress shielding, a process which causes bone to absorb and disappear over time because it is not adequately loaded enough.