Total Knee Replacements Designed with Women in Mind
Stryker’s Triathlon® Knee System represents the contribution of
over 30 years of clinical success in orthopedic implants. It utilizes the latest
in knee technology to help increase the extent to which you will be able to
restore motion in your knee after surgery. The Triathlon® Knee is designed
for natural knee movement, helping to relieve your pain and restore your independence.
Knee Replacements with a Better Fit for Women
There are over 300,000 knee replacements done each year in the US1 and
over 60% of them are performed on women.2 Triathlon is a total knee
system designed with women in mind.4 The design of Triathlon® offers
a wide range of sizing options that closely match both the female and male
anatomy. The smaller sizes are narrower, and a narrower implant accommodates
the female bone structure, which improves fit and function for women.
Improved Wear Performance
The bearing surface is defined as the two parts of the knee that glide together
throughout motion. Stryker’s new, advanced bearing technology, called
X3®, has demonstrated a 96% decrease in wear in laboratory
testing compared to competitive premium bearing technology.3
Increased Knee Motion
Restoring motion in your knee is likely one of the reasons you are considering
knee replacement. Motion, the bending (flexing), straightening (extension)
and rotation of your knee, affects your ability to perform everyday activities.
The Triathlon® Knee System allows for natural knee motion and up to 150° of
flexion. How much flexion do you need?
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References
- National Institutes of Health Consensus Development Conference Statement: Total Knee Replacement 12/10/03.
- American Academy of Orthopedic Surgeons.
- Stryker Orthopaedics Test Report RD-06-013.
- Hitt, K., et al., “Anthropometric Measurement of the Human Knee:
Correlation to the Sizing of Current Knee Arthroplasty Systems,” JBJS,
Vol. 85-A, Supplement 4, 2003.
- Wang A, Manley M, Serekian P. “Wear and Structural Fatigue Simulation
of Crosslinked Ultra-High Molecular Weight Polyethylene for Hip and Knee
Bearing Applications.” In: Kurtz SM, Gsell R, and Martell J, eds. Crosslinked
and Thermally Treated Ultra-High Molecular Weight Polyethylene for Joint
Replacements; ASTM STP1445. West Conshohocken, PA: ASTM International; 2003:151-168.
- Stryker® Orthopaedics Test Report: RD-03-082.
- Stryker® Orthopaedics Triathlon® CR Tibial Inserts made
from X3® UHMWPE, 5530-G-409 show a 68% reduction in volumetric
wear rate versus the same insert fabricated from N2\Vac™ gamma
sterilized UHMWPE, 5530-P-409. The insert tested was Size 4,
9 mm thick. Testing was conducted under multiaxial knee simulator
(multi-station MTS knee joint simulatora) for five million cycles
using appropriate size CoCr counterfaces, a specific type of diluted
calf serum lubricant and the motion and loading conditions, representing
normal walking, outlined in ISO/DIS 14243-3. Volumetric wear
rates were 17.7 ± 2.2
mm3/106 cycles for standard polyethylene inserts and 5.7 ± 1.5
mm3/106 cycles for test samples. Test inserts were exposed to
a gas plasma sterilization process. In vitro knee wear simulator
tests have not been shown to quantitatively predict clinical
wear performance.
- Stryker® Orthopaedics Triathlon® PS Tibial Inserts made
of X3® UHMWPE, 5532-G-409 show a 64% reduction in volumetric
wear rate versus the same insert fabricated from N2\Vac™ gamma
sterilized UHMWPE, 5532-P-409. The insert tested was Size 4,
9 mm thick. Testing was conducted under multiaxial knee simulator
(multi-station MTS knee joint simulatora) for five million cycles
using a size 7 CoCr counterfaces, a specific type of diluted
calf serum lubricant and literature or fluoroscopy based motion and
loading conditions representing stair climbing. Volumetric wear rates
were 3.6 ± 0.61
mm3/106 cycles for standard polyethylene inserts and were 1.3 ± 0.44
mm3/106 cycles for test samples. Test inserts were exposed to
a gas plasma sterilization process. In vitro knee wear simulator
tests have not been shown to quantitatively predict clinical wear performance.