VGK-X for lightweight adults


With its short build height and a weight of only 850 grams, the VGK-X is an ultra lightweight knee without compromising functionality.

The VGK-X provides secure stance as a default-stance knee, with easy initiation into swing. In case of a misstep, the VGK-X has stumble recovery, which gives you time to regain balance.

The VGK-X also features sophisticated stance and swing phase control, which supports variable walking speeds, leg-over-leg stair descent, and use on uneven terrain. Whether you are carrying a heavy backpack or speeding up to catch the bus, the VGK-X can adapt in real-time.

The VGK-X is a Fluidic Processor Knee (FPK), which means high performance without the need for charging. This knee has been designed for adults up to 80 kg.

Ultra lightweight

Weight of only 850 grams

Stance security

The VGK-X is default stance with easy release into swing phase

Stairs & slopes

Controlled leg-over-leg stairs and slope descent

No charging

High performance, no battery charging

Stumble recovery

Knee supports bodyweight when a stumble is detected


Occasional wetting and immersion up to 5m deep

Variable cadence

Adapts within a single step to changes in walking speed

Cycling mode (optional)

Selectable cycling function with a safety catch

VGK-X features

  • Fluidic Processor Knee (FPK) technology
  • Default stance knee
  • Stumble recovery
  • Variable cadence
  • Controlled stair and slope descent
  • Temperature & load compensation
  • Waterproof
  • No charging required
  • Up to three selectable stance modes:
    • Everyday walking mode
    • Ultra-high stance resistance mode
    • Cycling mode (optional)
  • Selectable swing-phase lock
  • Socket delimited flexion
  • Built-in rotational adaptors at the proximal and distal ends

VGK-X Specifications

ApplicationKnee disarticulation, transfemoral amputation, hip disarticulation, bilateral amputation

Suitable for use with osseointegration (requires manufacturer’s prior consent)
Activity classK1-K4
Max. bodyweight80 kg
Build height210 mm
Product weight850 grams
Proximal connectionPyramid, M36 thread
Distal connectionPyramid
Max. knee angleSocket delimited
IP ratingNot applicable (not an electrical device)

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