Comparing the Science of High-Flex Knee Implants
Do you have all the facts?
Bone Conservation
Some companies claim that bone conservation is a key factor in high-flex knee implants. These companies criticize the Zimmer® NexGen ® CR-Flex and LPS-Flex femoral designs because an additional 2mm of bone must be removed from the posterior condyles compared to the standard CR and LPS femoral designs. Read the Science Fact
Trochlear Groove
Some companies claim an advantage over the Zimmer NexGen CR-Flex and LPS-Flex Femoral Components because the deepened trochlear groove on their high-flex knee implants doesn't require a trochlear cut on the anterior femur. Read the Science Fact
Contact Stresses
Some companies claim that, because the posterior aspect of the spine on the Zimmer NexGen LPS-Flex Tibial Articular Surface is not circumferentially rounded, it undergoes greater contact stresses and leads to edge loading of the spine during high flexion activities. Read the Science Fact
Marketing Hype
Some companies claim that Zimmer NexGen High-Flex Technology is nothing more than marketing hype. Read the Science Fact
Please Note: The Zimmer Science Website is intended for medical professionals and contains material that is not intended for those outside the medical field.
