People who have the Rejuvenate Modular Hip Neck, Rejuvenate Modular Hip Neck, ABG II Modular Hip Stem, or ABG II Modular Hip Neck have experienced serious complications because of the wear and corrosion at the junction of the neck and stem components, including:
Excessive Metal Debris In The Surrounding Tissue And Bloodstream
Metal debris can destroy tissue and pollute the bloodstream with metal. This can result in pain, inflammation, and metallosis and the need for a revision surgery.
In the Rejuvenate Modular Hip Neck, Rejuvenate Modular Hip Neck, ABG II Modular Hip Stem, or ABG II Modular Hip Neck, the metal neck and the metal head wear against one another. This sends metal debris into the surrounding tissue and bloodstream. The Stryker necks are made of chromium and cobalt. The Stryker stems are coated with titanium. These hard metals grind against one another as the hip joint moves with regular activity.
This grinding causes metal shavings from the neck and stem to release into the surrounding tissue and bloodstream. Metallosis occurs when the metal shavings deposit into the healthy tissue surrounding the implant. This metal debris kills tissue. Healthy, pink tissue becomes gray or black in color as the metal settles into the body.
Chromium and cobalt can be detected in the urine and bloodstreams. Most often, doctors use a blood test to determine whether patients have elevated chromium and cobalt levels.
Some people may notice lumps, or pseudo-tumors, form under their skin. These fluid-filled sacs are the body’s attempt to isolate the poisonous metal. Often, these pseudo-tumors do not appear on the skin’s surface and can only be identified using an MRI.
Once chromium and cobalt hip implants are removed from the body, it takes time for the chromium and cobalt to leave the system. Some people have toxic levels of these metals in their systems for more than a year after the hip implants are removed.
There is no consensus in the scientific or medical community about what long-term effects these metals may have on the body. There has been some research on cobalt poisoning. According to the Alaska Department of Epidemiology, cobalt levels of 5 are considered toxic. That state says that signs and symptoms of cobalt poisoning can include visual impairment, cardiomyopathy, cognitive impairment, auditory impairment, hypothyroidism, peripheral neuropathy, rashes, blindness, deafness, heart failure, peripheral neuropathy, and hypothyroidism.
Excessive Fretting Can Cause Surrounding Bone to Dissolve
The neck and stem grinding and wear can cause a condition called osteolysis. With osteolysis, the bone essentially dissolves around the metal hardware, and the implant loosens, resulting in the need for a revision surgery.
Pain And/Or Swelling Around The Hip
Difficulty Climbing Stairs
Difficulty With Hip Flexion
The Need For A Revision Surgery