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metal on metal 195 articles

Researchers say it’s too soon to rule out cancer risk with corroding metal hip implants

The BBC announced this week that there is no evidence to suggest that metal-on-metal hip implants cause cancer, but a new study shows that DNA damage could occur if metal debris from the implant gets into the bloodstream, which can ultimately result in medical complications including cancer. The BBC based its decision on a study that found that patients with metal-on-metal hip implants did not have a higher rate of cancer than the general population or patients with artificial hips made with other materials. The study spanned up to seven years post hip replacement surgery. The study was initiated after ... Read More

Dozens of UK citizens sue DePuy, others for failed metal hips

Dozens of metal-on-metal hip replacement patients in South Yorkshire, Great Britain, are seeking damages from the manufacturers of the hip devices, alleging injuries ranging from device failure to toxic metal poisoning. According to The Star, 34 patients in South Yorkshire are suing DePuy Orthopaedics, maker of the ASR XL Acetabular and Hip Resurfacing systems, which the company recalled in August 2010 after medical data indicated a staggering number of the devices failed prematurely. Since then, patients have reported myriad problems, including intense pain, dislocation, immobility, bone fracture, muscle and tissue decay, nausea, and other severe complications linked to hip devices ... Read More

Knee, hip replacement surgery puts older adults at risk for heart attack

People who are older than 60 who undergo knee or hip replacement surgery are at risk of having a heart attack in the weeks immediately following surgery, a new study shows. One in 200 older patients experience a heart attack in the six weeks following hip surgery, and 1 in 500 experience a heart attack in the six weeks following knee surgery. Elderly patients over the age of 80 are at greater risk. The study does not prove the surgeries cause heart attacks, but doctors speculate the stress of undergoing surgery and the disruption of the flow of blood and oxygen ... Read More

Patient with recalled metal hips worries about his health

Steve Lorenz has always been active, but the 52-year-old foreman’s life changed after he had both his hips replaced. The surgery was intended to restore his active lifestyle, but it ended up causing him more discomfort and poisoning his blood. Steve was one of an estimated 93,000 people worldwide who received the ASR XL Acetabular hip replacement system made by Johnson & Johnson subsidiary, DePuy Orthopaedics. Unlike traditional hip implants which are made of plastic or ceramic parts, the DePuy device was made with all metal parts. Designed to be more durable, the implant proved to fail at a higher ... Read More

Plaintiffs allege DePuy hip implants caused extensive bodily damage

Plaintiffs from four states filed a lawsuit against Johnson & Johnson, its subsidiary DePuy Orthopaedics, and related companies in a Madison County, Wisconsin, Circuit Court June 29, seeking damages from injuries allegedly caused by metal hip implants made by DePuy. According to the complaint, 21 plaintiffs from California, Illinois, Indiana, and Missouri underwent hip replacement surgery, receiving DePuy metal-on-metal hip implants. However, the lawsuit alleges, instead of improving their lives, the devices malfunctioned and caused the plaintiffs to experience a spectrum of painful and crippling injuries, including bone and tissue loss, neurological injuries, cancer, liver and kidney damage, and other ... Read More

Nearly half of one maker’s metal-on-metal hip implant fails after six years

“There is now compelling evidence that (metal-on-metal hip implants) fail at a higher rate than hip prostheses made of other materials; indeed, one type of metal-on-metal hip has a failure rate of nearly 50 percent at six years.” The statement was made earlier this month in the New England Journal of Medicine by medical experts who reviewed data on hip replacement systems and determined that implants made from all-metal parts were more likely to fail than implants made from more traditional materials such as plastic or ceramic. Mounting evidence has prompted advisors to the Food and Drug Administration (FDA) to ... Read More

Artificial joint maker recalls defective metal hip implant

Orthopedic joint maker Stryker Orthopaedics is recalling its Rejuvenate Modular and ABG II modular neck hip stems because the parts may fret or corrode at the neck junction, which may cause pain and/or swelling. Some patients may even suffer from blood poisoning and require painful revision surgery to remove and replace their devices. Blood poisoning from corroding artificial hip implants was thought to be a problem only associated with metal-on-metal hip replacement systems. However, the newly recalled Stryker hip implant is not made from all metal parts, but does have metal components. It is being recalled because it is causing similar ... Read More

Smith & Nephew recalls 7,700 metal hip devices

In June, medical technology corporation Smith & Nephew announced it is recalling its R3 Acetabular System, an optional metal liner component usually used in conjunction with stemmed total hip implants. This latest recall adds to growing fears over the high rate of premature failure associated with artificial hip implants made with metal-on-metal components and the speed at which many of these devices were rushed to market. “We regularly review the effectiveness of our products and are not satisfied with the clinical results of this component,” Andy Weymann MD, Smith & Nephew’s Chief Medical Officer said in a statement about the ... Read More

New study sheds light on “genotoxic” damage rendered by metal hip implants

Researchers have a better understanding of why patients often suffer from inflammation and other long-term, chronic illnesses after being implanted with artificial hip devices made from all metal parts, such as the ASR hip implants recalled by DePuy Orthopaedics in August 2010. Researchers from Ohio State University and Imperial College London have combined high-resolution X-ray technology and electron microscopy to study the inflamed tissue surrounding the metal-on-metal hip devices implanted in patients. Their study, published in the journal Chemical Communications, found that inflammation occurs when Cobalt2+ ions are shed by the cobalt-chromium implants into the surrounding tissue. Previous studies have ... Read More

Corroding metal hip implants may cause DNA damage, medical problems

Corroding debris from failing metal-on-metal artificial hips release Cobalt 2+ ions in surrounding tissue, which cause inflammation and may also do damage to DNA which could result in medical complications including cancer, according to researchers from Imperial College London and Ohio State University. Metal-on-metal hip replacement systems were introduced in the early 2000s as a more durable alternative to traditional ceramic or plastic hip implants. But the devices began failing at higher than expected rates after just five years or less. What surgeons found is that the failures were triggered by inflammation in the tissue surrounding the implant. This inflammation was ... Read More