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Cobalt Poisoning Due To Joint Implant
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Did you have joint (hip, knee, shoulder, etc.) replacement surgery?

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Were You Diagnosed With Cobalt Poisoning?

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Cobalt Poisoning From Implant

Cobalt Poisoning From Implant

Are Your Ears Ringing Because of a Metal-on-Metal
Hip Implant?

Are Your Ears Ringing Because of a Metal-on-Metal Hip Implant?

Are Your Ears Ringing Because of a Metal-on-Metal Hip Implant?

Ringing in the ears, also known as tinnitus, is a sign of cobalt poisoning, a malady that might be caused by a metal-on-metal hip implant. However, that is not the only complication associated with these types of implants. All-metal hip systems were originally marketed as innovative devices that were more durable than other types of hip implants – which we now know is not the case.

What Should You Know About Cobalt Poisoning?

Cobalt poisoning, or cobaltism, can cause a number serious complications, including tinnitus. If not treated, it can also cause vertigo, deafness, blindness, optic nerve atrophy, convulsions, headaches, peripheral neuropathy, cardiomyopathy, hypothyroidism and cognitive problems such as dementia.

Cobalt poisoning has been linked to metal-on-metal hip implants. In April 2010, European regulators said that metal hip patients who were at risk for bone and tissue damage should be tested for high levels of cobalt and other metals in the blood. Later that year, the Journal of Bone and Joint Surgery described two patients with metal-on-metal hips who developed cobalt poisoning. Symptoms of cobaltism include:

  • Irritability
  • Fatigue
  • Tinnitus
  • Hearing loss
  • Headaches
  • Loss of coordination
  • Cognitive decline
  • Depression

Metal-on-Metal Hip Implants Can Shed Cobalt
and Chromium Debris

A hip implant that uses all-metal components is known as a metal-on-metal hip implant. These types of hip devices are usually made of chromium and cobalt. The problem with all-metal hip implants, experts have found, is that they can shed debris into the body when the two metal surfaces rub together. In fact, suffering from an elevated cobalt level is a common allegation of those suing over metal-on-metal hip implants. Other complications include:

  • Swelling, extreme pain and discomfort
  • Clicking, popping or grinding
  • Loosening of the implant
  • Unexplained hip pain
  • Thigh or groin pain
  • Pain when walking
  • Pain when getting up from a seated position
  • Pain when bearing weight

Some all-metal hip patients have to undergo a second surgery to remove their implant when complications become severe; this procedure is known as a revision surgery. Metal-on-metal hip implants are known to fail more often than other types of hip implants, a trend that has served to raise the orthopedic community’s safety concerns.

In January 2013, the U.S. Food and Drug Administration (FDA) gave new recommendations for patients with metal-on-metal hip implants. The agency advised, among other things, that patients showing any symptoms should be tested for the presence of metal ions.

Contact Us

If you or a loved one has suffered any signs of cobalt poisoning after receiving a metal-on-metal hip implant, you may have valuable legal rights. The personal injury attorneys at Parker Waichman LLP can help you with any questions you may have. We offer free, no-obligation case evaluations. To find out more, please fill out our online form or call 1-800-YOURLAWYER (1-800-968-7529).


Cobalt Poisoning From ImplantRSS Feed

Systemic Cobalt Poisoning Increasingly Recognized with Metal-on-Metal Hip Implants, Study Shows

Jul 16, 2015
A review published in the Journal of Patient Safety evaluates systemic arthroprosthetic cobaltism, or systemic cobalt poisoning from arthroplasty implants, related to corrosion of chrome-cobalt hip implants. The researchers sought to identify all cases of systemic arthroprosthetic cobaltism through a systematic literature review. The study found "a substantial increase" in reports of systemic arthroprosthetic cobaltism over the past three years, with a total of 25 patients between 2001 and...

Metal Ions: A Potential Indicator of Metal-on-Metal Hip Failure

Mar 12, 2013
Metal-on-Metal (MoM) hip implants have come under increasing scrutiny as regulatory authorities have documented a high percentage of failure across the globe.  Researchers, who performed a retrospective study, have found that a Cobalt ion levels in a patient’s blood were significantly higher in asymptomatic patients who later needed a revision of their MoM hip implant.  Now researchers believe if a patient is curious about the status of their MoM hip implant, the Cobalt ion...

No Cancer Rate Seen with Metal-on-Metal Hip Implants Early On

Sep 18, 2012 | Parker Waichman LLP
Although metal-on-metal hip implants like the recalled DePuy Orthopaedics ASR model and others have been linked to myriad complications and side effects, it does not appear they cause an increased risk of cancer for recipients of the devices. According to a new study appearing in British Medical Journal and presented to the British Orthopaedic Association, people who’ve been implanted with one of several metal-on-metal hip implants do not face an increased risk of cancer caused by an...

Judge Overseeing DePuy ASR Hip Implant Lawsuits Says Executives will be Deposed

Sep 11, 2012 | Parker Waichman LLP
Eight current and former executives from DePuy Orthopaedics have been called to testify as part of the Multidistrict Litigation the company faces over its defective and recalled ASR and ASR XL metal-on-metal hip implants, according to a report at There are currently more than 6,000 personal injury lawsuits combined as part of the DePuy ASR MDL. That lawsuit is in U.S. District Court for the Northern District of Ohio and preliminary proceedings are underway as victims of these...

DePuy ASR Hip Replacement Lawsuit Filed on Behalf of Patient Suffering from Painful Symptoms Allegedly Due to Recalled Metal Hip Implant

Sep 5, 2012 | Parker Waichman LLP
Parker Waichman LLP, a national law firm dedicated to protecting the rights of victims injured by defective medical devices, has filed a lawsuit alleging that the DePuy ASR hip implant caused painful symptoms in a Seminole, Florida resident. The suit was filed on August 24th in the U.S. District Court for the Northern District of Ohio, Western Division (Case No. 1-12-dp-23381). There, it is one of the many cases that have been filed into the multidistrict litigation as part of the In Re: DePuy...

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