Prominent surgeons have gathered data that shows nearly 9 percent of patients examined two years after having a Zimmer NexGen CR-Flex knee replacement required revision knee surgery, and 36 percent showed signs of loosening of the cement-less CR Flex artificial knee. Th[ese are] unacceptably high failure rates and are likely due to a design defect. Victims who received Zimmer NexGen CR-Flex knee replacements are now filing lawsuits to recover for their injuries. If you received this type of knee replacement and have had it replaced or are experiencing pain and discomfort, you may be entitled to compensation. To learn more about your legal rights contact a Zimmer NexGen CR-Flex knee replacement lawyer as soon as possible.