FoundationTotal Knee System

Patello-Femoral Kinematics
  • The deepened patellar groove on the Foundation femoral component minimizes patellar advancement which has been shown to increase flexion3 and restore normal kinematics8.
  • Anatomic patellar groove promotes normal biomechanics.
  • Groove depth increases at higher angles of flexion to provide increased resistance to patellar dislocation.
  • The patello-femoral geometry of the Foundation Knee can resist lateral joint forces well beyond those seen in the physiological knee5.

Tibial Fixation: Solutions for Tibial Loosening

I. Minimize the Transfer of Shear Stresses to the Underside of the Tibial Baseplate
The Foundation tibial-femoral geometry was designed to allow the desired motion for a prosthetic knee which includes 8mm of rollback and +/-15° of rotation7.

II. Maximize Resistance to Shear Forces The tibial stem design utilizes the strongest bone in the proximal tibia to resist rotational forces design to provide maximum initial fixation and long term stability1,4,6.

III. Optimize Load Distribution The asymmetric profile of the Foundation tibial components offers total coverage and uniform loading. These results are not thought to be achieved by symmetrical designs2.

Fig. 1. Anatomic patellar groove promotes normal biomechanics.

Fig. 2. Tibial-femoral geometry minimizes shear stresses to the underside of the tibial baseplate
Fig. 3. Anatomic Tibial Baseplate