3W020 Modular Knee Joint, polycentric

Item number: 3W020

Category: All products


Loading Class: 100 kg
Category: Knee and hip joints
Material: Steel Titanium

There are variations of this item. Please select the variation you wish.


3W020 Modular Knee Joint, polycentric

  • polycentric
  • with internal extension assist
  • up to 100 kg/220 lbs. body weight

  • for trans-femoral amputees
  • medium functional level
  • medium stance phase stability
  • medium swing phase control
  • can be used also for hip disarticulation
  • not recommended for patients with a higher activity level

This knee joint has a pyramid with a spherical segment at its proximal and distal end.
Linkage bars connect upper and lower joint. The security of the stance phase results from polycentric kinematics, setting of center of rotation is done by the extension stop adjustment. For a control of the swing phase, axis friction and extension assist spring are infinitely adjustable.

Technical data:
Max. knee flexion angle: approx. 110°
Structural height: 37 mm (knee center to upper end of pyramid)

3W313-L/R 36-44 Foam Cover

Additionally carried loads are also to be considered for weight selection.

Article-Number  Material  Weight  Loading Class
3W020-1  Titan  462 g  100 kg
3W020-2  Steel  701 g  100 kg