
At Class Action 101, we understand the concerns patients have about the safety of their medical devices, particularly regarding cobalt in hip replacements. For decades, millions of Americans have received hip implants to restore mobility and improve their quality of life. However, many patients are now discovering that certain metal-on-metal hip replacement devices contain significant amounts of cobalt, which can lead to serious health complications. Understanding when manufacturers stopped using cobalt in hip replacements and recognizing the risks associated with these devices is crucial for anyone who has received a hip implant or is considering hip replacement surgery.
The use of cobalt in hip replacements has not been completely discontinued, but significant changes occurred in the medical device industry between 2010 and 2016. Many manufacturers began phasing out metal-on-metal hip implants containing cobalt-chromium alloys after mounting evidence of complications emerged. The FDA issued safety communications in 2011 and 2013 warning about the risks of metal-on-metal hip systems, and several major manufacturers voluntarily recalled their cobalt-containing devices between 2010 and 2012. While some surgeons continue to use cobalt-chromium alloys in certain hip replacement components today, the widespread use of metal-on-metal designs with high cobalt content has dramatically decreased. However, hundreds of thousands of patients who received implants before these changes still have cobalt in hip replacements that may be releasing metal particles into their bodies, potentially causing a condition known as metallosis or cobalt toxicity.

Cobalt toxicity occurs when cobalt particles from hip replacement material wear away and enter the bloodstream. The human body can experience severe reactions when exposed to elevated cobalt levels over time.
These health risks demonstrate why understanding the composition of hip replacement material is essential for patient safety and long-term wellbeing.
Recognizing the signs of cobalt toxicity is crucial for patients with older metal-on-metal implants. Symptoms can develop gradually over months or years as cobalt levels accumulate in the body.
If you experience any combination of these symptoms and have a metal-on-metal hip implant, contact your physician immediately for blood cobalt testing and implant evaluation.
Determining whether your hip replacement material includes cobalt is an important step in protecting your health. Several methods can help you identify the composition of your implant.
Taking these steps empowers you to understand your implant composition and make informed decisions about monitoring and potential medical or legal action regarding cobalt in hip replacements.
Patients who have suffered harm from cobalt in hip replacements may have significant legal rights. At Class Action 101, we help individuals across all 50 states understand their options for seeking compensation.
Understanding your rights is the first step toward obtaining justice and compensation for injuries caused by dangerous hip replacement material containing cobalt.
If you believe you have been harmed by cobalt in hip replacements, taking prompt action is essential. The legal process can be complex, but Class Action 101 is here to guide you through every step.
Class Action 101 represents clients throughout all 50 states who have been harmed by defective medical devices, including those containing dangerous levels of cobalt in hip replacements.
If you or a loved one has experienced complications from a cobalt-containing hip implant, Class Action 101 is ready to help. Our firm represents clients in all 50 states who have been harmed by defective hip replacement material. We understand the physical, emotional, and financial toll that complications from cobalt in hip replacements can take on patients and families. Contact us today for a confidential consultation to discuss your case and learn about your legal options. Time limits apply to filing claims, so don't wait to explore your rights to compensation and justice.
Are all hip replacements made with cobalt?
No, not all hip implants contain cobalt. Modern hip replacement material often uses ceramic, polyethylene, or titanium alloys instead of cobalt-chromium combinations. Metal-on-metal devices with cobalt were more common between the 1990s and early 2010s, but many surgeons now prefer alternative materials with lower complication rates. If you're considering hip replacement surgery, discuss material options with your surgeon to understand which hip replacement material will be used in your procedure.
What cobalt blood levels are considered dangerous?
Medical guidelines suggest that cobalt levels above 7 parts per billion in the bloodstream may indicate problematic wear from cobalt in hip replacements. However, some patients experience symptoms at lower levels, while others remain asymptomatic at higher concentrations. Regular monitoring through blood tests helps physicians track whether your hip replacement material is releasing excessive metal particles and determine if intervention is necessary to prevent serious complications from developing.
Can cobalt toxicity be reversed?
The severity and reversibility of cobalt toxicity depend on exposure duration and accumulated damage. Removing the source of cobalt in hip replacements through revision surgery often allows blood levels to decrease over several months. However, some complications like permanent nerve damage, heart tissue scarring, or bone loss may not fully resolve even after implant removal. Early detection and prompt treatment improve the likelihood of recovery and minimize long-term health consequences from defective hip replacement material.
How long does it take for symptoms to appear?
Symptoms from cobalt in hip replacements can emerge within months of implantation or take several years to develop. The timeline depends on factors including implant design, patient activity level, body chemistry, and how quickly the hip replacement material wears and releases particles. Some patients with metal-on-metal devices experience rapid onset of complications, while others develop subtle symptoms gradually. Regular follow-up care and monitoring are essential for anyone with older implants containing cobalt-chromium alloys.
Will insurance cover revision surgery for cobalt implants?
Insurance coverage for revision surgery related to cobalt in hip replacements varies depending on your specific policy, the medical necessity of the procedure, and documentation of complications. Many insurance plans cover revisions when medically necessary due to implant failure or toxicity. However, patients often face significant out-of-pocket costs even with insurance coverage. If your revision surgery resulted from a defective hip replacement material, legal claims against the manufacturer may help recover expenses not covered by insurance.
Which hip implant manufacturers used cobalt?
Several major medical device manufacturers produced hip replacement material containing cobalt-chromium alloys, including DePuy (ASR and Pinnacle systems), Smith & Nephew (R3 system), Stryker (Rejuvenate and ABG II), Wright Medical (Conserve and Dynasty), Zimmer (Durom Cup), and Biomet (M2a-Magnum and M2a-38). Many of these cobalt in hip replacements devices have been recalled or discontinued due to high failure rates and complications. If you received a hip implant between 1997 and 2015, research your specific device to determine if it was among the problematic models.
Can I file a lawsuit if my implant hasn't failed yet?
Generally, legal claims require demonstrable harm or injury from cobalt in hip replacements before you can pursue compensation. However, if blood tests show elevated metal ion levels or imaging reveals tissue damage even without symptoms, you may have grounds for a claim. Additionally, some jurisdictions recognize medical monitoring claims that seek compensation for necessary ongoing testing and surveillance when you have a known defective hip replacement material. Consultation with legal counsel can help you understand whether your specific situation warrants filing a claim now or continuing monitoring.
How much compensation can I receive for cobalt poisoning?
Compensation for injuries from cobalt in hip replacements varies widely based on the severity of your complications, extent of medical treatment required, impact on your life and work, and the strength of evidence in your case. Settlements and verdicts in hip replacement material cases have ranged from tens of thousands to millions of dollars. Factors affecting compensation include revision surgery costs, ongoing medical needs, permanent disability, lost income, pain and suffering, and whether the manufacturer's conduct warrants punitive damages. Each case is unique, and Class Action 101 can evaluate your specific circumstances to estimate potential recovery.





