This section gives a brief information description of the VGK basic functions. Before using the knee joint it is strongly recommended to read the operation manual carefully or turn to a specialist for expert advice.
Energy Independence
Amazing though it might seem, the VGK performs its functions without a power supply and thus doesn’t require recharging, and has a lower risk of damage as opposed to microprocessor controlled knees. You can go about your business as long as you need or set out on a journey without ever worrying that the knee unit might all of a sudden malfunction.
Walking Downstairs
The VGK is not the only knee unit to allow the prosthesis to walk leg over leg downstairs. However, it is an energy-independent hydraulic knee unit, whose bending resistance changes dynamically during each step due to the patented Vortex Metering System. It means that you will be walking downstairs with a sweep, and each prosthesis bending will be uniform with no acceleration and dip effect at the end of the step (without the so-called “clasp-knife effect”). You can read more about the clasp-knife effect in FAQs section.
Speed Variation
At a glance, it is as simple as that: the faster you walk, the faster the VGK works. It is the hydraulic system that adjusts to walking pace providing such a knee unit mode.
Stumble Recovery
When do we run the risk of stumbling? Very often: for example, when we are walking and are engrossed in a conversation with someone, or when we are lost in thoughts about something, or when we are admiring the surroundings. The surface we are walking on may be absolutely smooth. In case you stumble the Stumble Recovery function will help you to avoid tumbling. This function is in a reliable form only found in high end knee joints, typically in the microprocessor joint, as well as in the VGK.
Thermal Stability
The patented hydraulic technology guarantees a steady operation of the VGK at different temperatures of both the environment and the knee unit. It means that you can walk for a long time at a fast pace (particularly down the stairs or slopes) without worrying about temperature setting modification as the knee unit heats. Alternatively, you can visit regions with a cold or hot climate, and practically see no difference in the VGK operation mode.
Stability Under Load
The patented hydraulic technology allows maintaining the VGK settings at different loads on the prosthesis. It means that if you go on a backpacking trip or have to bear a heavy load, the VGK will adjust to the changed conditions, and you will practically see no difference in the VGK operation mode.
Stable Stance Phase
If necessary, you can select the Ultra High Resistance operation mode. What for? For example, you would like to go fishing, or to take a picture, or you have to work standing up – this VGK operation mode will secure safe standing.
Cycling
To go cycling you choose the Cycling operation mode. A Safety Mechanism will continue working in the background and help reduce risk from collapsing when you are dismounting a bicycle
Water Resistance
The VGK is a water resistant device. Even if you are caught in the rain and get soaked or have to wade through waters, the knee unit will still be functioning.
Walking Downslope
The VGK enables you to walk leg over leg down sloping surfaces. Moreover, the patented Vortex Metering System guarantees smooth walking and steady operation mode of the knee unit. In FAQs section you can read more about the clasp-knife effect, which appears in other knee units when walking down slopes.
Wading Through Grass
If you lead an active lifestyle and travel a lot, you definitely faced a situation when you have to go through a terrain with thick grass or wade through shallow water. It may really turn out to be a challenging task as the knee unit bends uncontrollably when moving the prosthesis through grass or water. The VGK-Go! helps to solve this problem and enables you to move steadily.
Walking Backward
How often do we have to walk backward? Many times a day! The VGK will not limit you in this situation.
Kneeling
The VGK has the maximum bending angle, actually limited only by the prosthetic socket. It allows you to get on your knees or even sit down when you are playing with a child, working, or performing a religious ritual.