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metallosis 229 articles

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

Patients with metal-on-metal hip exhibit increase in cobalt and chromium levels

Just two years ago, a five-year follow-up was performed on 52 randomized patients that had received either a metal-on-metal hip or metal-on-polyethylene hip implant. Tests confirmed an alarming 10- to 20-fold increase in cobalt and chromium levels in the systems of the patients who received the metal-on-metal hip implant. Most hip implants last for 20 years or more. However, patients are reporting metal hip implants like the ASR metal-on-metal hip implants made by DePuy Orthopaedics, a subsidiary of Johnson & Johnson, are failing in only five years Other metal-on-metal hip implant makers are Smith & Nephew, Wright Medical, Zimmer Biomet Holdings and Stryker. All  have faced an onslaught ... 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

Court documents indicate Johnson & Johnson knew of design flaws in ASR Metal Hip for years before recall

According to an article published in the New York Times, Johnson & Johnson executives allegedly knew about flaws in the design of its metal-on-metal ASR hip implant before it proceeded with a device recall in 2010. The Times reported that internal documents were disclosed during a trial for lawsuits filed against J&J and its subsidiary, DePuy Orthopaedics, that indicate the company concealed the information from physicians and patients. The ASR metal hip device was being marketed in the United States in 2005. Among problems reported by physicians and patients related to the hip implant is that the device sheds metal debris as the parts rub together from normal use. This can result in ... 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 verywell.com 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

FDA Warns of Medical Effects that Can Occur with Metal-on-Metal Hip Implants

In February, the U.S. Food and Drug Administration (FDA) provided information to the public advising of potential medical effects that can occur with metal-on-metal hip implants. Makers of such metal-on-metal implants, such as Johnson & Johnson and its subsidiary DePuy Orthopeadics; Smith & Nephew, and Wright Medical have been swamped with lawsuits for injuries and negative health effects allegedly caused by the devices. The FDA points out that metal-on-metal hip implants have the same adverse effects as any other type of hip implant such as loosening, infection, bone loss, fracture of the device or bone, and joint dislocation. But the FDA openly warns of the additional ... Read More

FDA Cleared Metal-on-Metal Hip Implants without Clinical Testing

When Consumer Reports did an investigation regarding the FDA and approved medical devices designed to be implanted into the body, what they found was disturbing to say the least. “Medical devices often aren’t tested before they come on the market,” Consumer Reports says. That was the case for the DePuy ASR XL metal-on-metal hip that has allegedly injured thousands of patients, including Stephen Tower, M.D., a 55-year-old orthopedic surgeon. About a year after receiving his hip implant, Tower could tell that something was wrong. He experienced pain from his hip “pretty much constantly”, his chromium and cobalt blood levels were through the roof, ... Read More

Reactions to Metal Debris Shed by Metal-on-Metal Hip Implants Documented as Early as 1970s

Companies such as Johnson & Johnson and its subsidiary DePuy Orthopeadics; Smith & Nephew; and Wright Medical manufacture metal-on-metal hip implant designs that have been shown to fail at an alarmingly high rate. Metal-on-metal hip implants have been in the spotlight lately for the lawsuits associated with patients claiming to be injured by their faulty design. Reports indicate metal-on-metal designs are failing in as little as five years, and many patients are experiencing adverse affects such as loosening, which is an especially dangerous issue for this design. As the parts of the device rub together during normal activities such as walking or running, the metal parts ... Read More

Metal-on-Metal Hip Implants Referred to as ‘a large uncontrolled experiment’ by BMJ Publication

According to BMJ Magazine, a leading publication about medical news, metal-on-metal hip implants are basically “large uncontrolled experiment” because the patients who received them were kept in the dark about the details and risks of this type of hip implant device. With a metal-on-metal hip device, such as the models made by Johnson & Johnson’s subsidiary DePuy Orthopaedics, and Smith & Nephew, there is great risk in a few areas. First, the large-diameter ball-and-cup designs tend to wear out faster and become dislocated. In fact, the average failure rate at the seven year mark for metal-on-metal implants is 13.6 percent, which is ... Read More

FDA: Metal-on-Metal Hip Implant Patients Risk Soft Tissue Damage

Metal-on-metal hip implants have been in the spotlight lately for the lawsuits associated with patients claiming to be injured by their faulty design. The litigation prompted the U.S. Food and Drug Administration (FDA)  to call for manufacturers of these devices to conduct studies examining safety and efficacy, and has added warnings of its own the the medical devices. Companies such as Johnson & Johnson and its subsidiary DePuy Orthopeadics; Smith & Nephew; and Wright Medical manufacture metal-on-metal hip implant designs that have been shown to fail at an alarmingly high rate. In an article published by Medical News Today, the FDA states that there aren’t ... Read More