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;