Products Knee 3D Knee System

3D Knee System

3D Knee™

 

 

The 3DKnee is the result of more than a decade of
research. This is truly the first knee developed to work
in conjunction with the true kinematics of total knees.
Based on a comprehensive analysis of knee kinematics
through fluoroscopic review, tibial plateau resection
and tibial insert retrieval analysis, an opportunity has
been identified to improve on existing designs in total
knee replacement.

Enhances Quadriceps Function

Provides excellent power, especially early in
flexion, by rolling out to engage the patella quickly,
while maintaining great leverage by preventing
anterior slide and shortening of the quadriceps
lever-arm.

Rollout of the femur aligns the quadriceps
to the center of the patella, improving
quadriceps leverage while reducing patella
stresses.

Reduces Contact Stress
Increases implant longevity by reducing
polyethylene contact stresses as a result
of a congruent lateral condyle.

 

Improves Fermoral/Patella Mechanics

Improves femoralpatella
mechanics by
promoting early rollout
of the femur to engage
the patella in a deep
patella groove.

 

Improves ROM

Improves range of motion by
maintaining the posterior position
of the femoral condyles on the
tibia during flexion.

Femoral Component

  • Congruent lateral
    condyle
  • Deepened patella
    groove
  • Wide medial condyle
  • Single radius curvature
    for increased contact
    area up to 80°
Tibial Component
  • Asymmetric baseplate
  • Winged keeled geometry
  • Two tibia size options for each
    3DKnee insert
Domed Patellar

  • Domed geometry for
optimal contact area with
the deepened trochlear
groove
«Available in sizes
26-38mm
Insert
  • Congruent lateral condyle
  • Size specific for optimal
    congruency to the femur
  • Centered posteriorly
    to encourage increased
    femoral rollback
  • Wide medial condyle for
    translation

Case Study

History:

"...43 year old white female with systemic lupus and erythematous
... and who now has a 13 year history for progressively worsening
right and left knee complaints..."
Medical Diagnoses:
"1) She has severe destruction of both knees. 2) She has had a
history of lupus ..."

Procedure:
November 5, 2001
Pre-op: ROM (L)
Extension: 5 degrees
Flexion: 105 degrees
Range: 100 degrees
Pre-op KSS (L)
Knee Score: 43
Function Score: 70

Last Follow-Up:
December 2, 2003
(24 months)

ROM (L)
Extension: 0 degrees
Flexion: 137 degrees
Range: 137 degrees
KSS (L)
Knee Score: 100
Function Score: 100