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Metal-on-Metal Hip Implant Linked to Heart Failure Risk in Men

Men who received a large-head metal-on-metal hip implant had nearly double the risk of heart failure than men who received a metal-on-polyethylene, said Stephen Graves, M.D., at the American Academy of Orthopaedic Surgeons Annual Meeting. According to a study led by Dr. Graves, 2,115 men had total hip arthroplasties between January 2003 – December 2012. Of those men, 2,028 received metal-on-polyethylene and 87 received the ASR XL, the DePuy Synthes Joint Reconstruction. The ASR XL recipients had “significant increased risk” of heart failure – one in 10, to be exact. The study strongly suggests that the men who have received the ASR XL should have “close ... Read More

Recent Study Claims Metal Wear from Metal-on-Metal Hip implants Impairs Bone-Forming Cells’ Function

In a recent study, physicians and researchers from Charité-Universitätsmedizin Berlin and DRK Klinikum Westend tested the effects of metal wear from metal-on-metal hip implants looking for changes possibly linked to exposure to excessive metal ions. A Berlin-based team of researchers tested adjacent tissues, joint fluids and bone marrow that had been exposed to cobalt and chromium from the metal-on-metal hip implant. They found that dissolved metals were absorbed into the bone marrow, impairing the cells that are responsible for bone mineralization, a vital process in the forming of bone. Metal-on-metal hip device makers such as  DePuy Orthopaedics, a subsidiary of Johnson & Johnson,  Smith & Nephew, Wright Medical, Zimmer ... Read More

Wright Medical Pushing Eleventh Circuit for a Retrial in metal-on-metal hip implant litigation

Wright Medical, one of the manufacturers of metal-on-metal hip implants, is pushing the Eleventh Circuit for a retrial in the first bellwether case of the multidistrict litigation (MDL) that alleges the devices are faulty and lead to permanent injury. Robyn Christiansen was the recipient of a metal-on-metal Wright Conserve Hip Implant System that the jury deemed defective. Christiansen was awarded $1 million in compensatory damages last April, and $10 million in punitive damages. Although U.S. District Judge William S. Duffey, Jr., gave the company credit for its intentions to improve the quality of life for active patients looking for a lasting hip system when so ... Read More

New Zealand Woman Experiences Severe Metal Toxicity Two Years After Receiving Double Metal-on-Metal Hip Implants

Lynne McKay was a healthy 50-year old former nurse that suffered from hip dysplasia, a painful condition in which growths form at the hip joints. She could barely make it to the mailbox and back. “I got to a place where I could only walk to the letterbox with two walking sticks,” McKay recalls. She was admitted in 2007 for a double hip replacement and received the Stryker Mitch THR (total hip replacement) System, with metal components made of cobalt and chromium. She was excited to finally get her life back. Almost immediately, McKay began experiencing pain. Her hips clicked when she walked. ... Read More

Problems with Metal-on-Metal Hip implants may be detected with MRI before painful symptoms appear

According to a study published by the Journal of Bone and Joint Surgery, problems with metal-on-metal hip implants such as inflammation and tissue damage may be present before symptoms such as as discomfort or pain ever appear. The researchers say that implant failure can be detected with a simple MRI before the patient ever experiences the first signs of pain, and before the surrounding tissue sustains any further damage. Inflammation of the joint lining is called synovitis, and is linked with metal-on-metal hip implants, manufacturers of these devices are currently facing a number of lawsuits alleging injuries linked to their products. Other metal-on-metal hip manufacturers such as Smith & Nephew, Wright ... Read More

A New Method of Lab-Testing Knee and Hip Implants May Drastically Improve Design

This week in the International Journal of Surface Science and Engineering, a new study was published suggesting that lab-testing knee and hip implants using natural proteins may lead to drastically improved design. In the midst of lawsuits alleging that metal-on-metal hip implants result in problems including loosening, bone erosion, damage to surrounding tissue and metallosis, a dangerous blood condition that occurs when metal bits flake off the device and make their way into the bloodstream, this information couldn’t have come at a better time. Artificial hip makers such as Smith & Nephew, Wright Medical and  DePuy Orthopaedics, a subsidiary of Johnson & Johnson, are in hot water for metal-on-metal hip designs that ... Read More

Number of hip implant revision surgeries on the rise; physicians link osteolysis to metal components

For the past 20 years, researchers at Rush University Medical Center have been studying the durability of hip implants, following the results from 204 total hip replacements performed at the center. The patients were aged anywhere from 20 years old to 84 years old. During the course of the study, the number of revision surgeries had increased because of osteolysis, which is bone resorption. Doctors explain osteolysis is how the body reacts to metal debris, which may be created by wear and corrosion of metal-on-metal hip implants. “With time, the number of repeat surgeries due to wear and osteolysis has increased, as have the numbers of ... Read More

Man diagnosed with Cobalt Poisoning After Receiving Metal Hip Implant

A patient with severe heart failure was referred to the Marburg University clinic in Germany in 2012. A possible cause was coronary artery disease, but after further examinations, the medical team ruled it out. However, some of the medics working on the case noticed a few notable similarities between the patient’s symptoms and the symptoms of a patient on House, a TV series in which British actor Hugh Laurie plays the lead character, Gregory House, M.D. On the TV show, a patient was experiencing strikingly similar symptoms and was diagnosed as having cobalt poisoning, which was caused by the debris shed ... Read More

Patients with Metal-on-Metal Hip Implants Much More Likely to Need Revision Surgery

Patients that have received metal-on-metal hip implant devices are far more likely to need revision surgery, an article by states. Jonathan Cluett, MD, contributed his expertise in an article published by the website providing information to patients that have received metal-on-metal hip implants, and what they should do if they are experiencing problems. Metal-on-Metal hip implant designs were recommended for patients with a more active lifestyle, based on claims the all-metal system was a better fit for their needs. But many of the implants were failing at an alarmingly high rate, whereas traditional models made of ceramics and polyethylene can last as long ... Read More

As Many as Half a Million Patients at Risk from Metal-on-Metal Hip Implants

The U.S. Food and Drug Administration (FDA) spent two days convening a meeting to address the issues with the metal-on-metal hip implants, and for good reason: the metal-on-metal designs, such as the ones made by DePuy Orthopaedics, a subsidiary of Johnson & Johnson; Zimmer Holdings Inc. and Wright Medical Group, have been linked to injures, muscle and tissue damage, bone damage, loosening, and more. As many as half a million recipients of the metal-on-metal hip implants could be at risk. The metal-on-metal hip implant devices were recommended for patients with a more active lifestyle, based on claims the all-metal system was a better ... Read More