Zimmer NexGen Knee
Zimmer NexGen Knee Replacement is an uncemented CR Flex artificial knee, made up of a femoral component (the portion of the knee replacement connecting the thigh bone (femur) to the knee) and the tibial component (the portion of the knee replacement connecting the leg bone (tibia) to the knee), and the patellar component (the actual knee cap). In 2006, Dr. Berger noticed that Zimmer's CR-Flex Porous Femoral component was not completely fusing in a number of his patients, resulting in discomfort or pain. When he reported this problem to Zimmer, they blamed his surgical techniques, and subsequently terminated his services as a paid consultant. Together with Dr. Craig J. Della Valle, who had also noticed problems with the Zimmer component in patients, Dr. Berger conducted a study on the CR-Flex Porous Femoral component, the results of which were reported at 2010 National Convention of the American Association of Orthopaedic Surgeons. Drs. Berger and Valle reported that the uncemented Zimmer knee failed early in about 9 percent of some 100 patients studied.
Injuries resulting from defective Zimmer NexGen® Knee Replacement implants may include: knee replacement failure revision surgery, loosening of the implant after replacement and knee pain or knee complications.