Polycentric knees allow users to walk with outstanding safety: during the INITIAL CONTACT phase, the knee is locked in a completely extended position. In order to support patients at best, suggesting the best knee for them, we had to know the behavior of each knee considering the trajectory of his CIR (Istantaneus Rotation Center). As follow You can see the shadow of the CIR during a complete flexion of each knee compared to the load line.

Polycentric Knee Joint Compact is specific for people approaching to walk with variable CIR (Center Instantaneous Rotation). Safety achieved due to polycentric mechanism. Studied geometry allows “prosthetic shortening” during the PUSH OFF phase avoid to stumble. Extension assisted and suitable for different walking speeds due to spring stiffness adjustment.

This knee is tested according to ISO 10328.

Warranty 36 months.

Very high CIR and close to the hip, low fatigue to start flexion.

Posterior CIR to the load line.

Very closed CIR to the load line, good for voluntary control.


Thanks to the pyramidal adapter suitable for each knee, it’s possible to change the CIR position compared to the LOAD LINE in order to offer users more safety or more voluntary control.

Limited community ambulation.
Able to traverse low-level environmental barriers (curbs, ramps, stairs, uneven surfaces).

Code 6.002.01.T

Characteristics Flexion angle 141°
Component Weight 516 g
Material Titanium Gr. 5
Maximum User Weight 130 Kg

Code 6.002.01.k


Flexion angle 141°

Component Weight 370 g
Material Aluminum alloy 7075 + Stainless Steel (pyramid)
Maximum User Weight

100 kg

Code 6.002.01.SS


Flexion angle 135°

Component Weight 700 g
Material Stainless Steel
Maximum User Weight 130 kg