Products Knee Foundation Revision Knee System

Foundation Revision Knee System

 

Foundation®
Modular Revision
Knee System


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
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

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

Femoral Augmentation
Blocks

  • 5mm and 10mm
    thickness
  • Posterior and distal
    blocks
  • Mechanically attach
    to femoral component
  • Coarse grit blast finish for
    enhanced cement fixation
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)
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.

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)

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

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.