Zimmer introduces novel mobile bearing for knee implants
31 Jan 2011
Zimmer Holdings, Inc. has launched the Zimmer NexGen LPS-Flex
mobile bearing knee with Prolong highly crosslinked polyethylene (XLPE)
in the US.
The LPS-Flex Mobile Bearing knee provides a revolutionary anteriorly-positioned
pivot near the entry point of the anterior cruciate ligament (ACL),
replicating the anatomic center of knee rotation.
The LPS-Flex Mobile system is backed by more than ten years of
successful clinical history in Europe and Japan. Since the system's
launch, more than 130,000 LPS-Flex Mobile knees have been implanted
"Our Prolong Highly Crosslinked Polyethylene provides a number of
clinical advantages, including reduced wear and delamination
resistance," said Jeff McCaulley, Zimmer President, Reconstructive.
"Applying this exciting material to our already successful NexGen
LPS-Flex Mobile Bearing Knee System represents a major step forward
in mobile bearing design."
During in vitro wear simulator testing, the LPS-Flex Mobile with
Prolong Polyethylene system demonstrated an 83% wear reduction
compared to conventional polyethylene.
Zimmer was the first company to launch XLPE over nine years ago
for the NexGen Fixed Bearing system. Since its launch, the blend
specifically formulated for the knee has been utilized in more than
450,000 implantations worldwide and has demonstrated an 81% (CR) and
78% (PS) wear reduction compared to conventional poly during in
vitro wear simulator testing.