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The analysis of 402,051 hip replacements showed that 6.2% of metal-on-metal hip implants had failed within five years, compared to 1.7% of metal-on-plastic and 2.3% of ceramic-on-ceramic hip implants. Each 1 mm (0.039 in) increase in head size of metal-on-metal hip implants was associated with a 2% increase in failure rate. [60]
At the beginning of 2011, DePuy Orthopaedics said they were phasing out the ASR Hip Implant because of declining sales, but never mentioned the high failure rate data from an Australian implant registry. In March 2011, The New York Times reported that DePuy issued its first warning to doctors and patients about the high early failure rate. [1]
Failure of a dental implant is often related to the failure of the implant to osseointegrate correctly with the bone, or vice versa. A dental implant is considered to be a failure if it is lost, mobile or shows peri-implant (around the implant) bone loss of greater than 1.0 mm in the first year and greater than 0.2 mm a year after.
One 2013 study found that women with metal hip replacements were 29% more likely than men to experience implant failure, possibly due to anatomical differences and inadequate testing in women. And ...
Implant failure may occur; the metal screws and plate can break, back out, or cut out superiorly and enter the joint. This occurs either through inaccurate implant placement or if the fixation does not hold in weak and brittle bone. In the event of failure, the surgery may be redone or changed to a total hip replacement. Mal-positioning: The ...
On August 24, 2010, DePuy recalled [4] all ASR hip implant systems sold since 2003. The 2010 DePuy Hip Recall was issued after research released by the National Joint Registry (NJR) found high rates of hip replacement failure for the ASR XL Acetabular and ASR Hip Resurfacing systems.
The many examples of implant failure include rupture of silicone breast implants, hip replacement joints, and artificial heart valves, such as the Bjork–Shiley valve, all of which have caused FDA intervention. The consequences of implant failure depend on the nature of the implant and its position in the body.
Some countries exclude hemiarthroplasties done for traumatic hip fractures. Initially designed only to record surgeon and implant performance, the main outcome collected was implant failure, however recently patient-reported outcome measures are being added.
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