Preservation of Device Components Ordered for DePuy Pinnacle Plaintiffs

February 8, 2013

The multidistrict litigation that is being filed against DePuy Orthopaedics is now moving forward, news reports say. The preservation of explant may be vital for the court proceedings, according to the Case Management Order No.9 issued by United States District Judge Ed Kinkeade. The plaintiffs who underwent hip revision due to defective DePuy Pinnacle hip system are asked to abide in this protocol.


The salvaged device may be part of evidence when the first trials are opened in court which is expected to be in September 2014. Though there are still no news of DePuy recalling their Pinnacle hip system, the number of lawsuits has risen to a staggering 3,000 and counting.


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Explant Preservation Order Issued in Federal DePuy Pinnacle MDL

Hip Resurfacing More Likely to Fail as Hip Replacements

October 13, 2012

Unlike traditional hip replacement, hip resurfacing doesn’t replace the ball of the hip with a metal or ceramic ball. Instead, the damaged hip ball is reshaped and capped with a metal prosthesis. The damaged hip socket also is fitted with a metal prosthesis. However, surgeons were alarmed that women are five times more prone to experience failure than men in the first seven years after surgery, according to an Internet article.

The study also claimed that the size of the patient’s femoral cap is the deal-breaker, and since women have smaller joints than men, the rate of failure is higher. Medical experts do not recommend hip resurfacing for women.

Read more: Traditional Hip Replacement a Better Option for Women Than Resurfacing

Loosening of Hip Replacements becoming more Common

July 18, 2012

Surgeons have learned over the past decade that newer versions of hip implants, made with a metal ball that fits into a metal socket, such as the DePuy Pinnacle, have been failing at a higher rate than traditional hip implants made of ceramic or plastic parts, medical industry publications report. Typically, most hip implants fracture, loosen, or dislocate over a decade or two due to wear and tear. But many of these metal implants, designed to be more durable than traditional implants, are failing after five years or less.


FDA findings and medical reports show that there are are several problems associated with these artificial hip implants, the most painful one among the side effects involves a loosening of the hip implant.Over time the hip replacement can become loose, this can cause pain and problems with the functioning of the hip replacement itself.When a hip replacement is placed into the body, it is either press-fit into the bone, or cemented into position. Both options are used because they fit tightly into the bone of the thigh (femur) and pelvis so that the implant cannot move.When the implant begins to loosen, the hip replacement will also begin to move in small amounts. When this begins patients begin to feel pain in their bodies.


The unfortunate part for the patients whose hip replacement has become loose, is that hip replacement revision surgery is one of the only ways to correct the loosening.However, with revision operations patients almost always recover less overall motion of the joint. The implant durability also declines with each revision.  This is why surgeons try to avoid doing such procedures as to get the most out of the hip replacement already placed inside the patient.


With increasing amount of complaints about metal-on-metal hip implants loosening prematurely, the United States food and Drug Administration (FDA) has, in 2010, ordered 21 manufacturers to conduct studies on patients who have received the implants. The 21 manufacturers include DePuy and the DePuy Pinnacle.The FDA will then determine its course of action on metal-on-metal hip replacements according to the results of this test.


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