Smith & Nephew launches natural-motion knee replacement at AAOS annual meeting

Smith & Nephew launches natural-motion knee replacement at AAOS annual meeting

PR Newswire

LONDON, March 19, 2013

LONDON, March 19, 2013 /PRNewswire/ --Smith & Nephew (LSE:SN NYSE:SNN), the
global medical technology business, announces the showcasing of the JOURNEY™
II Bi-Cruciate Stabilized (BCS) knee replacement at this year's American
Academy of Orthopaedic Surgeons (AAOS) meeting in Chicago, March 19-23.

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The JOURNEY II BCS knee sets a new standard inknee implant performanceby
restoring more normal motion. This is achieved through the reproduction of
both the shapesof the joint's hard surfacesand the normal force behavior of
the soft tissues, such as ligament and muscle firing patterns. As a result,
the soft tissue's readjustment to new shapes and forces after surgery is
minimized, helping to return the patient's stride to its natural rhythm.

"The JOURNEY II BCS knee takes knee performance beyond the current standards
for fit and alignment and gives patients the complex motion, strength and
stability of a human knee," said Gaurav Agarwal, President of Smith & Nephew's
joint reconstruction business. "You don't have to ask patients if it feels
like a normal knee—you can see it in their gait and in their post-op x-rays.
We redefined knee implant function when we launched the original JOURNEY knee
in 2005, and with JOURNEY II BCS we have again outpaced traditional knee
replacement technology."

This latest innovation is the result of intense research and design, and the
development of new PHYSIOLOGICAL MATCHING™ Technology. Using its LifeMOD™
human simulation software, Smith & Nephew engineers were able to conduct
proprietary analysis of the bone, ligament and muscle forces that impact the
knee, and then account for those forces within the design of an implant that
restores anatomic shapes and normal motion.

"Unlike implants that create unnatural motion with a symmetric, circular
design, or with a rotating platform, the JOURNEY II BCS knee accommodates the
swing-and-rotate of the knee with the same engineering principles the body
naturally uses," explains Steven Haas, MD, Chief of the Knee Service at
Hospital for Special Surgery in New York City. "As a result, the muscles and
ligaments around the new joint don't have to work harder because the implant's
natural shape and resulting motion allow these soft tissues to move in
familiar ways. This leads to higher patient satisfaction scores, more
mechanical efficiency of the muscle, and a more natural feeling while walking
or bending in the months after their procedure."

The JOURNEY II BCS knee is made from Smith & Nephew's VERILAST™ Technology.
The combination of two wear reducing materials – proprietary OXINIUM™ alloy
and a highly cross-linked plastic liner, VERILAST Technology generates a
significant reduction in implant wear compared to traditional bearing couples
on the market. On traditional plastic liners, OXINIUM material is 4,900 times
more abrasion resistant than cobalt chrome and reduces knee replacement wear
on traditional liners by up to 85-percent compared to cobalt chrome

About Smith & Nephew
Smith & Nephew is a global medical technology business dedicated to helping
improve people's lives. With leadership positions in Orthopaedic
Reconstruction, Advanced Wound Management, Sports Medicine and Trauma, Smith &
Nephew has almost 10,500 employees and a presence in more than 90 countries.
Annual sales in 2012 were more than $4.1 billion. Smith & Nephew is a member
of the FTSE100 (LSE: SN, NYSE: SNN).

For more information about Smith & Nephew, please visit:

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Trademark of Smith & Nephew. Registered US Patent and Trademark Office.

[i] G. Hunter and M. Long, "Abrasive wear of oxidized Zr-2.5Nb, CoCrMo, and
Ti-6Al-4V against bone cement", 6th World Biomaterials Cong. Trans., Society
For Biomaterials, Minneapolis, MN, 2000, p. 835.

SOURCE Smith & Nephew

Contact: Media, Andrew Burns, Smith & Nephew, +1-901-399-5739,; Investor/Analyst, Phil Cowdy, Smith & Nephew,
44 (0)20 7401 7646,
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