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Maximizing the Performance Envelope

Maximizing the performance envelope

The guiding principle behind the design of the JOURNEY^◊ Bi-Cruciate Stabilized Knee System was to achieve near normal function, while maintaining excellent durability and robustness. The balance that is achieved among these attributes defines the performance envelope of a knee system.

Dimensions of the performance envelope

Function

Stability replicate the natural stability inherent in the normal knee
Kinematics maximize the range of normal AP and axial motion
Functional flexion provide a kinetic environment within the knee that optimizes muscle function and mechanical efficiency

Durability

Minimize polyethylene wear
Provide sufficient post strength
Provide sufficient strength of the bone/cement/implant interfaces

Robustness

System design that is insensitive to:

Uncontrollable environmental factors that can affect performance (implantation alignment/positioning)
Variability inherent in the system components (manufacturing tolerances)
Variability in patient-related factors (anatomy, BMI, musculature, activity)