High-Tech for more Quality of Life

The C-Leg is the first and only leg prosthesis system worldwide with a fully microprocessor-controlled stance and swing phase.

C-Leg of Otto Bock.

High-Tech for more Quality of Life – the C-Leg Leg Prosthesis System

At a Glance

  • Fully microprocessor-controlled leg prosthesis system
  • Automatic real time adaptation to step speed, length, and frequency
  • High level of safety and minimal risk of falling
  • Best possible resemblance to the natural gait pattern
  • Wireless Remote Control and additional standing mode for more independence and comfort
  • Optimized service and warranty concept with C-Leg mobility guarantee
  • Free service inspections during the warranty period

The C-Leg is the first and only leg prosthesis system worldwide with a fully microprocessor-controlled stance and swing phase. Through the use of unique C-Leg Technology, it has set a new standard for stability, comfort and regained mobility for transfemoral amputees.

The C-Leg adjusts to the requirements of the prosthesis wearer in real time and therefore ensures a level of dynamic response and security previously unattained. By now, over 35,000 C-Leg wearers all over the world are profiting from these advantages. Many of their ideas and wishes, combined with years of experience, were the driving force behind the introduction of new features in 2006. The result: The new C-Leg with Wireless Remote Control and an optimized service and warranty concept. The technical development of the C-Leg can be easily recognized by the anthracite-colored frame.

The C-Leg Offers many Advantages

Through the use of C-Leg technology, the C-Leg permanently recognizes which walking phase the wearer currently is in, and adjusts itself accordingly in real time depending on the step speed, length, and frequency. On slopes, uneven surfaces, or when going down stairs – the high-quality leg prosthesis system automatically adjusts itself and therefore ensures increased dynamic response and security.

With the C-Leg, your customer achieves the best possible approximation of a natural gait pattern. Through constant stance phase dampening, the C-Leg offers a high level of security even if the users stumbles. Thanks to the low risk of falling, your customer can concentrate less on the prosthesis and more on the finer things in life. The load is distributed evenly over both legs, which provides relief for the contralateral side. In addition, the amount of energy required for walking is significantly reduced. Of course you can individually adjust the C-Leg to correspond to your customer’s needs in regards to safety, residual limb activity, and responsiveness.

C-Leg controller.

The new Wireless Remote Control offers C-Leg wearers even more independence. Using the remote control, your customer can quickly and unobtrusively switch between 1st and 2nd mode for cycling or other activities. It is also possible to activate a new standing mode for additional comfort and safety, which stabilizes the C-Leg at any angle of flexion in spite of the dynamic structure – without your customer having to expend additional muscle power as was the case in the past. Another new feature is the individual swing phase dampening control. Now your customer can adjust the movement resistance according to his or her wishes using the Wireless Remote Control, without impacting safety.

C-Leg User.

The new C-Leg is complemented by an optimized service and warranty plan. We continue to offer the three-year warranty, but it can be extended to five years if desired. In addition, the positive experiences over the past few years have shown that the service inspection intervals for the new C-Leg can be doubled. To find out how to have the joint serviced, how you can receive free service joints during the warranty period, and for more information regarding the proven worldwide mobility guarantee, please read more here.

We developed the C-Leg especially for the requirements of active prosthesis wearers. According to the Otto Bock Mobis® mobility system, it is suitable for knee disarticulation, transfemoral, hip disarticulation, and pelvic disarticulation amputees with mobility levels 3 and 4. The maximum allowable body weight is 125 kilograms.

The C-Leg is part of the Product Line which also includes the C-Leg compact, which is especially designed for the safety requirements of transfemoral amputees in the lower and middle mobility levels 2 and 3. A list of indications supports you in the selection of the correct C-Leg  system. It can only be supplied by a certified prosthetist. You will find more information on the certification process here.

Symbol - Mobility Grades 3 and 4.

Mobility Grades 3 and 4

Recommended for amputees with Mobility Grades 3 and 4 and up to 125 kg / 275 lbs weight.

List of Indications

List of Indications for C-Leg and C-Leg compact

Recommendations of the manufacturer.

C-Leg Fitting Questions

Our indications brochure is an essential reference for fitting patients with the C-Leg. It helps physicians determine which knee joint system will help the patient the most. The actual fitting and adjustment may only be carried out by a certified prosthetist.

In principle, every amputee is entitled to an adequate fitting according to the latest state-of-the-art technology. However, because many economic factors also play a role, the decision as to whether the C-Leg can be reimbursed depends on individual factors that can lead to different results depending on the prosthesis wearer. It is important for the applicant to show what new possibilities the high-quality prosthesis would open up for him or her. 

Wireless connection of C-Leg / C-Leg compact and computer.

Optimal Adjustment – BionicLink & C-Soft

With the BionicLink 60X3, we introduced Bluetoothtechnology to our leg prosthesis system.  Now, all adjustments can be completed using a wireless connection – your patient can move freely and without restrictions while his or her C-Leg or C-Leg compact is adjusted. During the gait test, you can concentrate fully on the adjustment process and verification of the gait pattern.

The BionicLink is used in conjunction with the C-Soft 4X180 auto-adaptive software. With its user-friendly interface, C-Soft makes the adjustment process simpler and more systematic and thus helps you provide your customer with the best fitting possible. C-Soft also allows you to manage data which you can save in corresponding customer files and makes it easier for you to document your fittings.

C-Leg Protector.

Good Looks and Real Function –
The C-Leg Protector

The C-Leg Protector 4X160 is more than just a cosmetic cover: It represents the modern solution for C-Leg and C-Leg compact wearers. The C-Leg Protector covers and protects the joints of the C-Leg Product Line, including the tube adapter, and provides a cosmetic contour in the calf area. The result: An attractive appearance without any functional restrictions. The C-Leg Protector can be used on right or left sides and is quick and easy to adjust. During everyday use, your customer can put it on, take it off, and clean it easily if needed.

Alternatively, you can use a cosmetic foam cover for the leg prosthesis systems in the C-Leg Product Line. We offer an unfinished cosmetic cove (3S26) or the option of fabricating an individualized cosmetic cover (3R59) according to measurements specified by you.

Greater Independence – The 12 Volt Car Charger Cable

Always mobile and independent: Combined with the 4E50 battery charger, the cable makes it possible for your customer to charge the lithium-ion battery even on the road. All that is required is a conventional 12 volt connection, for example the car cigarette lighter.

Practical – The Charger Cable Extension

If a foam cover makes it difficult to connect the charger cable to the knee joint, we offer the charger cable extension 4X78 and the plug bracket 4X79. When installed above the prosthetic foot on the distal end of the tube adapter, they ensure an uncomplicated charging process.

Certified Fittings

Helping to ensure a high-quality and successful fitting – C-Leg and C-Leg compact certification.



How does it work? Detailed information on C-Leg functionality.


Warranty and Service

Detailled information on warranty and service process.


The C-Leg System

This prosthesis system will be configured according to the wishes and requirements of your customer.


Documents / Downloads

Download current brochures and information material.


Software Updates

Download the actual upgrades of our software.


Quality for life

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