Health care professionals have increasingly been warning about problems with metal-on-metal hip implants, which can shed metal particles into the body. The particles can result in soft tissue injury, cause inflammatory reactions, and lead to bone loss.
DePuy Hip Update 1/23/13: Newly disclosed court documents have revealed that a 2011 internal investigation conducted by Johnson & Johnson on its much-troubled DePuy ASR hip implant estimated that the device would fail within five years in nearly 40% of recipients. For reasons still unclear, the company failed to make this information public while simultaneously downplaying the potential health complications associated with its metal-on-metal hip.
Free Defective Depuy Hip Implant Case Evaluation: If you or a loved one has an experience with a hip implant failure, you should contact our law firm immediately. You may be entitled to compensation by filing a lawsuit and we can help.
DePuy ASR Acetabular Cup
Unfortunately, many DePuy ASR Acetabular Cups began to fail in patients soon after the hip was replaced. Reportedly, the DePuy device stopped working properly within a few years, compared to normal implants, which should last at least 15 years. The DePuy cup was shallower than other comparable implants and also was more difficult to insert surgically.
The New York Times reported in a March 10, 2010, article that an Australian study found the implant was failing too early. DePuy had taken the ASR off the Australian market in December 2009.
Researchers from a British study also reported problems with metal-on-metal implants. There were adverse soft tissue reactions, occurring most often in patients who had received smaller femoral heads. Patients were having adverse reactions to metal debris that resulted from the friction of the metal-on-metal surfaces. These patients also had higher rates of wear and tear and soft tissue damage.
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Soft Tissue Injuries
Soft tissue injuries include bumps and bruises (contusions) and small tears of muscles (minor strains) or of ligaments and tendons near joints (minor sprains). Contusions, mild strains, and mild sprains produce mild to moderate pain and swelling. The swelling can become discolored, turning purple after a day and becoming yellow or brown days later. People with more severe symptoms, such as deformity, an inability to walk or use an injured part, or severe pain, may have a mild strain or sprain.
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