Knee shape reconstruction, also in a sitting position.


Knee shape reconstruction, also in a sitting position.


Product description

The Flex Duo is a prosthetic cosmetic cover designed for limb prostheses. It fills the space between the knee prosthesis and the prosthetic socket. 

In the sitting position, when the prosthesis is bent, the covers imitate a healthy knee well.

They are made of the same material as our covers. Both in colour and shape, they perfectly match all our AK femoral amputation covers.

Putting on is done by inserting the cover from the bottom. You may need to unscrew the knee prosthesis for high Duo aligners.

Duo covers are attached with double-sided tape.

They are adapted to kneeling, as long as the design of the knee prosthesis allows it.



Technical Details

  • Calf circumference: any.
  • Height: any.
  • Weight: > 300 g.
  • Shape: exact copy according to scan of the sound limb.
  • Material: soft and flexible, it is highly resistant to water and bacteria.
  • Colors: skin tone, gray, white and black.
  • Painless Tattoos - extra paid option.


Please, measure the prosthesis very carefully, in particular the circumference of the socket, as a mistake by a few millimeters may cause the cover to not fit.

Taking pictures is also very important. Moving the phone lens distorts the dimensions of the prosthesis.