C-Leg

Reclaim your determination.

The best C-Leg of all time

The C-Leg’s greatest strength is helping people achieve independence. No other mechatronic leg prosthesis solution is trusted by as many users worldwide. More than 60,000 fittings for people with transfemoral amputations have been carried out since 1997. Studies prove it: The C-Leg is the safest microprocessor-controlled knee joint and therefore extremely reliable. With its numerous innovative features, the new C-Leg marks the start of a new era: It’s the best C-Leg of all time – safer, more dynamic, more modern, easier. From stairs and ramps to varying surfaces and walking backwards – the C-Leg prosthesis solution adjusts itself dynamically to various everyday situations. A relaxed standing position with a slightly flexed knee is intuitive now. Also new are the design and the option of controlling the knee joint via an app. And finally, we’ve taken the stumble recovery function to an even higher level.

Knee angle sensor

The knee angle sensor provides important data: It measures the flexion angle and angular velocity of the joint.

Lithium-ion battery

A lithium-ion battery provides energy for controlling the knee joint. It is located right in the rotation axis of the C-Leg. If you use the C-Leg on a daily basis, we recommend that you always charge the battery overnight.

New carbon frame design

In order to withstand the variety of day-to-day stresses, the frame is made of carbon – an especially strong, high-grade and lightweight material. The frame houses and protects the electronics, the hydraulic unit and the battery.

Thanks to its new design, the C-Leg now has a lower height. This expands its range of fitting options.

Hydraulic unit

The hydraulic unit controls the C-Leg. It generates the resistances for flexion and extension.

Electronic control unit

The integrated microprocessor receives and processes sensor signals. It controls the movement of the knee joint in real time

Inertial motion unit (IMU)

A gyroscope and acceleration sensors allow the position and speed of the C-Leg in space to be determined in real time.

Control of the prosthesis is based on an analysis of the movements and the force acting on the joint.

Bluetooth®

Integrated Bluetooth® technology permits straightforward communication with the joint. An existing connection is displayed with an LED. Bluetooth® can be deactivated if necessary.



Benefits at a glance

More freedom of movement

Thanks to a new, patented method for the C-Leg prosthesis solution, the user’s movement pattern has become significantly easier – for example on challenging surfaces such as sand, grass or gravel. The flow of smaller step sequences and the user’s gait pattern when changing walking speeds are controlled more smoothly. Even if you’ve never worn a C-Leg before, this technology typically makes the adjustment period quite short.

Greater mobility

Fluid movements occur first and foremost when the prosthesis joint responds quickly to different everyday situations. The resistances of the C-Leg adapt to all walking situations in real time, whether on level ground, stairs, ramps or varying surfaces. This gives you a noticeably smoother and more reliable movement pattern – and more energy for the better things in life.

Select the stance function yourself

The C-Leg offers you relief in the standing position. Using a discreet movement pattern, you can assume a relaxed position with a slightly flexed knee. You might already be familiar with this function. It is especially comfortable on slopes and uneven surfaces. A new feature of the C-Leg is that your O&P professional can alternatively set the intuitive stance function at your request. With this function, the joint detects from your movement when you’d like to stand in a relaxed position and when you need support for your next step.

Stumble recovery for enhanced safety

The C-Leg prosthesis solution has always put the user’s safety in numerous everyday situations first. A large number of studies have proven that the frequency of falls in people with a transfemoral amputation is significantly lower with the C-Leg in comparison to conventional prostheses. This makes the C-Leg one of the most reliable leg prosthesis solutions out there. Scientific studies show that this increases confidence in the prosthesis and that users pay greater attention to their surroundings. We’ve taken the C-Leg’s stumble recovery function to a new level: It now offers an even more precise foothold and greater safety.

Comfortable sitting

Another new feature is the automatic sitting function. This function helps you assume a relaxed position after sitting down, as the joint swings freely.

Smart control via app

For the first time, the Cockpit app lets you operate the C-Leg directly using your smartphone (Android) and access information regarding the joint, such as the battery level. The C-Leg communicates with the app via integrated Bluetooth.

In any weather

The C-Leg is weatherproof and therefore protected against splashed water. So a sudden shower during a walk is no longer a problem for the prosthesis wearer.

Protection and attractive design

The C-Leg Protective Cover shields the prosthesis solution against jolts, the environment and normal wear and tear. It consists of a robust main Protective Cover component, a shield insert for the front side as well as a foot cuff. The Protective Cover also gives the leg a natural volume under long clothing.

Functionality

Intelligent system

The C-Leg technology provides intelligent control of the prosthesis solution for people with a transfemoral amputation and adapts it to your gait pattern in real time. Behind this is a complex sensor system that captures data in real time and recognises which phase of walking you are in, whether on level ground, going down stairs step-over-step, or on slopes – and now on difficult surfaces such as forest floor, sand and gravel as well. This makes the C-Leg one of the most reliable leg prosthesis solutions out there. Thanks to the capacity of the prosthesis to adjust itself, the user can also negotiate small obstacles, unclear terrain or large crowds.

Ideal prosthetic components

Triton

The Triton prosthetic foot is suitable for users who want a dynamic carbon fibre foot that is suitable for both everyday life and recreational sports.

Triton smart ankle

As an excellent everyday foot, the Triton smart ankle possesses moderate dynamics. Its hydraulic ankle joint supports users particularly well when walking on inclines or sloping surfaces.

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FAQ

  • What benefits of the C-Leg are proven by scientific studies?

    The advantages of the C-Leg technology have been investigated in detail during numerous scientific studies. Among other things, these studies have proven that the frequency of falling is much lower with the C-Leg compared to other leg prosthesis systems. In addition, the user does not have to concentrate on the C-Leg all the time, but can move more freely on a day-to-day basis. The studies also show that C-Leg users have more confidence in their prosthesis, are able to boost their activity level and consume less energy while walking. They are able to cover longer distances with it.

  • What benefits of the C-Leg are proven by scientific studies?

    The advantages of the C-Leg technology have been investigated in detail during numerous scientific studies. Among other things, these studies have proven that the frequency of falling is much lower with the C-Leg compared to other leg prosthesis systems. In addition, the user does not have to concentrate on the C-Leg all the time, but can move more freely on a day-to-day basis. The studies also show that C-Leg users have more confidence in their prosthesis, are able to boost their activity level and consume less energy while walking. They are able to cover longer distances with it.

  • What benefits of the C-Leg are proven by scientific studies?

    The advantages of the C-Leg technology have been investigated in detail during numerous scientific studies. Among other things, these studies have proven that the frequency of falling is much lower with the C-Leg compared to other leg prosthesis systems. In addition, the user does not have to concentrate on the C-Leg all the time, but can move more freely on a day-to-day basis. The studies also show that C-Leg users have more confidence in their prosthesis, are able to boost their activity level and consume less energy while walking. They are able to cover longer distances with it.

  • What benefits of the C-Leg are proven by scientific studies?

    The advantages of the C-Leg technology have been investigated in detail during numerous scientific studies. Among other things, these studies have proven that the frequency of falling is much lower with the C-Leg compared to other leg prosthesis systems. In addition, the user does not have to concentrate on the C-Leg all the time, but can move more freely on a day-to-day basis. The studies also show that C-Leg users have more confidence in their prosthesis, are able to boost their activity level and consume less energy while walking. They are able to cover longer distances with it.

  • What happens when the battery is drained?

    A vibration message reminds you in time when the battery gets low. When the battery is drained, the C-Leg automatically switches to safety mode so that stance phase resistance remains activated.

  • What happens when the battery is drained?

    A vibration message reminds you in time when the battery gets low. When the battery is drained, the C-Leg automatically switches to safety mode so that stance phase resistance remains activated.

  • How long does it take to learn how to use the C-Leg?

    Many users are able to walk down stairs step-over-step on the first day with the C-Leg. On the other hand, it can also take several days or weeks until you have internalised using and walking with the leg prosthesis system. This depends on the individual since everyone is different.


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