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Foundation®
Modular Revision
Knee System
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Tibial Stem Extensions
- Anti-rotation splines
- Self locking thread for
attachment to baseplate
- Satin surface finish
avoiding stress shielding
- 100mm and 150mm
overall lengths
- Titanium alloy (Ti6AI4V)
- Five diameters, 10-18mm
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 Tibial Augmentation Blocks
- 5mm and 10mm thickness
- Medial and lateral blocks
- Blocks taper distally to match normal
anatomy
- Coarse grit blast finish for enhanced
cement fixation
- Mechanical attachment
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Reproducible Knee
Kinematics
The femoral cam and tibial spine are designed
to engage at 60° flexion to induce
smooth roll back and to provide for 130°
of flexion. The deepened, recessed, and
extended patella groove on the Foundation
femoral component minimizes patellar
advancement, promotes normal biomechanics,
and provides increased resistance to
patellar dislocation.1·2·3
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Femoral Augmentation
Blocks
- 5mm and 10mm
thickness
- Posterior and distal
blocks
- Mechanically attach
to femoral component
- Coarse grit blast finish for
enhanced cement fixation
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 Femoral Stem Extensions
- Anti-rotation splines
- Morse type taper for attachment
to modular femoral component
- Captured attachment screw
- Satin surface finish avoiding
stress shielding
- 100mm and 150mm overall lengths
- Six diameters, 12-22mm
- Titanium alloy (Ti6AI4V)
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Bone Deficiency
Management
Augmentation blocks address side specific
bone deficiencies. The unique attachment
design provides a secure mechanical lock
between modular components. The tibial
blocks can be used with either the modular
revision or the non-porous primary tibial
baseplates. The femoral blocks can be used
with either the modular revision or the P.S.
femoral components.
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 Modular Femoral
Component
- Six sizes - left
and right
- Attachment feature
for spacer blocks
- Morse type taper for stem
extensions
- Deepened, recessed and
extended patella groove
- Prominent lateral flange
- 130° flexion capabilities
- Size specific controlled rollback
- 60° cam engagement
- Closed femoral PS box
»Cobalt chromium alloy (CoCrMo)
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Constrained Tibial Inserts
- Can be used with modular revision
or primary PS femur
- .75mm total medial/lateral translation
- Varus/valgus angulations limited
to +/-1.5°
- Internal/external rotation
limited to +/-1°
- Seven thickness, 11-25mm
- UHMWPe Gamma N2 pkg
Modular Tibial
Baseplate
- Asymmetric profile coverage
- Winged-keel proximal stem shape
- Cobalt chromium alloy (CoCrMo)
«Attachment feature for spacer blocks
«Threaded distal tip for attachment
of long stems
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Knee Joint Constraint
The Foundation constrained insert was
designed to maximize "in-plane" joint motion
while minimizing "out-of-plane" translation
and rotation. The larger post on the constrained
insert allows for minimal amounts of
medial/lateral slide, varus/valgus motion,
and internal/external rotation. Modular
revision stem extensions provide added
support in bone deficient scenarios.
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Knee