Potential Dangers of Certain Zimmer NexGen CR Flex Porous Femoral Component Knee Implants

Recent research suggests that certain Zimmer NexGen CR Flex knee implants have a high rate of failure, with one study finding that knee replacements that are not properly cemented are failing at a rate as high as 9.3 percent. An article in The New York Times reported on the study, which was conducted by researchers from the Rush University Medical Center. The study revealed that many of these implants were failing after less than two years, when the device is supposed to last 15 years.

One hundred patients were used in the study, and it was found that about 36 percent of the knee implants were loose. Over half of the patients experienced significant knee pain and other problems related to the implant’s loosening. Common problems patients with the Zimmer NexGen knee implants experienced included:

  • Compensation pain and problems;
  • Device failure;
  • Difficulty standing or walking;
  • Knee and joint pain;
  • Loosening of the implant’s components; and
  • The necessity for revision or replacement surgery.

Overall, it is estimated that over thousands of people have received a Zimmer NexGen knee CR Flex cementless implant since 2003, a number of which now require a second, painful revision surgery to repair or replace.

The Zimmer NexGen knee replacement systems are designed to stay on a patient’s bone without using adhesive cement. The implant is fused onto the bone by using cobalt-chromium molybdenum alloy and porous fiber metal that imitates human bone. However, studies have shown the implant can loosen if it is not properly fusing with the patient’s bone as it should, causing many to suffer severe pain and other knee problems.

The Pennsylvania defective medical device attorneys at Anapol Weiss can help those who have suffered because of a defective knee implant receive compensation for their injuries and losses. If you believe you may have a substantial claim for your defective knee implant, please contact us today by calling 866-735-2792.

Product Identification Notice: In any of our web pages referring to Zimmer NexGen products, these pages are intended to provide information about and are referring to the same Zimmer products that were identified by Dr. Berger in his presentation and study entitled “The High Failure Rate of a High-Flex Total Knee Arthroplasty Design,” see: http://www3.aaos.org/education/anmeet/anmt2010/podium/podium.cfm?Pevent=434 and were written about in the NY Times article titled “Surgeon vs. Knee Maker: Who’s Rejecting Whom?,” see: http://www.nytimes.com/2010/06/20/business/20knee.html?scp=1&sq=Zimmer%20Knee&st=cse and that are reported in the FDA MAUDE database, see: http://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfmaude/Search.cfm, where reports involving the Zimmer NexGen CR Flex Cementless or Porous Femoral component can be found. Not all Zimmer NexGen products are involved in our investigations and lawsuits.

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