3C88/3C89-3 - Knee prosthetics

C-Leg 4

Choose the latest in proven performance.

With over 100,000 fittings worldwide, the C-Leg is trusted by more users than any other microprocessor knee in the world. It’s no wonder: Studies show the C-Leg provides the exceptional reliability and performance a user needs to focus on what really matters — enjoying a healthy, active lifestyle.

With over 100,000 fittings worldwide, the C-Leg is trusted by more users than any other microprocessor knee in the world. It’s no wonder: Studies show the C-Leg provides the exceptional reliability and performance a user needs to focus on what really matters — enjoying a healthy, active lifestyle.

From descending stairs and ramps, to navigating uneven terrain, to walking backward, the C-Leg dynamically adapts to a wide variety of everyday situations.

This legacy lives on in the C-Leg 4 update. With an innovative design and exciting new features, the C-Leg 4 provides the known reliability, next-level personalisation, and an easier, more intuitive user experience for both patients and professionals alike.

Product typeMicroprocessor
Mobility grade2, 3, 4
Max. body weight136 kg
All specifications
Benefits at a glance
A user with the C-Leg leg prosthesis walking down a staircase.
Greater Mobility.

The key to fluid movement is a knee that responds quickly to different inclines and surfaces. With the C-Leg 4, users get improved stance release and increased support for descending ramps and stairs, enabling noticeably smoother and more reliable movement.

Enhanced safety
Stumble Recovery Plus.

Stumble Recovery Plus is active at all times with the C-Leg 4 update. This ultra-precise feature automatically detects fall-like movements during the swing phase of users’ gait and activates the resistance they need to avoid a fall, recover their balance, and maintain greater stability.

A C-Leg user taps his C-Leg before exercising.
Manual locking function

With the manual locking function users can conveniently secure the C-Leg 4 in extension with a simple tapping pattern, even when using a cosmetic fitting. This is particularly helpful during sporting activities, for example.

The C-Leg user is sitting on a chair while making pottery.
Support And Comfort For Sitting.

The C-Leg 4 detects when users sit down, mirroring their speed to keep them stable and in control — even if they’re using a chair or a walking aid for support. Once seated, they can enjoy a relaxed, comfortable position with a free-swinging joint thanks to the supported sitting function.

C-Leg 4
Easier user experience.

It’s easier than ever for users to get the most out of their C-Leg. Deep sleep mode saves battery during long flights, camping, or other activities where power supply is limited. The charger enables one-handed use. Plus, there’s a USB charging adapter available.

Training feature
Helpful Training Function.

A training function provides a feedback signal after every successful swing phase initiation to support troubleshooting and gait training as users get accustomed to their prosthesis. This feature can be activated and deactivated by the prosthetist or user via the Cockpit app.

A C-Leg user pets his wet dog close to a lake.
Weatherproof Design (IP67).

With the C-Leg 4, users don't have to worry about occasional water splashes. Whether they’re walking past a sprinkler, working in the garden, or caught in a sudden rain shower, the C-Leg is designed to stay protected as long as the joint and components are dried off afterward. The C-Leg is NOT WATERPROOF.

MyMode Plus
MyMode Plus.

Now, users can easily get more support for their favourite activities. MyMode Plus offers a fantastic selection of options for work, leisure, and athletics. Together with their prosthetist, users can select two settings for easy activation in the Cockpit app or via a movement pattern.

A C-Leg user is painting her shield insert
Customisable Shield Insert.

Users can personalise the look of their prosthesis thanks to a new customisable shield insert. Not only do these robust, durable covers protect the C-Leg 4 from environmental factors or wear and tear, they also now empower users to show off their unique style with each step.

The new colour of the C-Leg 4 – Midnight Shadow.
New Colour Option.

Many of the updates to our signature C-Leg microprocessor knee are based on feedback we received from users and professionals. In fact, that’s why the C-Leg 4 is available in two colors: the original lighter Desert Pearl as well as a darker shade, Midnight Shadow.

The C-Leg 4 activates his MyMode Plus in the Cockpit App
Smart Control Via App.

With the Cockpit app, users can fine tune MyMode Plus and other settings individually, switch between MyMode Plus options, check their knee’s battery status, set their volume, track their activities, perform a knee joint self-test if needed, and much more — all via their iOS or Android smartphone.

A C-Leg user is standing in a paint shop
Stance Function Selection.

Users can choose between intuitive and deliberate stance with the help of their O&P professional. Intuitive stance uses sensor data to detect whether the user needs support while standing or taking a step, while deliberate stance requires more conscious movements to resume flexion.

A blue circle with a graphically represented prosthesis and the word pro.
More Support For Prosthetists.

The app connectgo.pro for Android and iOS smartphones and tablets makes it easy for O&P professionals to quickly and conveniently program the C-Leg for their users.

User Experience

Shima’s C-Leg 4 story

Shima's positive charisma and broad smile are simply infectious. Anyone who talks to her realizes how much joy she has in her life and what a big heart she has. Being an O&P professional herself, she takes pride in caring for each of her patients and giving them the best devices to fit their individual needs. She loves to play wheelchair basketball, run, dance and hang out with her friends. Watch the video to see how her C-Leg supports her in everything she does.

C-Leg 4 user Shima sits on a stool while making pottery.
Functionality

Intelligent system

Ottobock is continually developing the C-Leg to ensure users get the latest and greatest in microprocessor knee technology. The C-Leg supports users throughout the entire gait cycle, adjusting to their unique walking patterns in real time. So, whether they’re going downstairs step-over-step, descending slopes, or navigating uneven terrain, C-Leg users can truly trust their prosthesis as they move through their daily activities.

The new C-Leg 4 with protective cover in an artistic photo
Specifications

Product information

Product typeMicroprocessor
Mobility grade2, 3, 4
Max. body weight136 kg
Amputation levelHip disarticulation, Transfemoral amputation, Knee disarticulation
MaterialCarbon

Product Data

Article number3C98-3=9.2-43C88-3=8.5-43C88-3=9.2-43C98-3=8.5-4
Mobility grade2, 3, 42, 3, 42, 3, 42, 3, 4
Distal connection

Tube clamp

Tube clamp

Tube clamp

Tube clamp

Proximal connection

Pyramid

Threaded connector

Threaded connector

Pyramid

Knee flexion angle130 °130 °130 °130 °
Moisture protectionIP68 (Water-resistant)IP68 (Water-resistant)IP68 (Water-resistant)IP68 (Water-resistant)
Weight (without tube adapter)1250 g1255 g1255 g1250 g
Max. body weight136 kg136 kg136 kg136 kg
ColourDesert pearlMidnight ShadowDesert pearlMidnight Shadow
Minimum distal system height with 257/2R67 tube adapter289 / 329 mm289 / 329 mm289 / 329 mm289 / 329 mm
Max. distal system height with 257/2R67 tube adapter494 / 534 mm494 / 534 mm494 / 534 mm494 / 534 mm
Min. build height with 2R57/2R67 tube adapter294 / 334 mm294 / 334 mm294 / 334 mm294 / 334 mm
Max. build height with 2R57/2R67 tube adapter499 / 539 mm499 / 539 mm499 / 539 mm499 / 539 mm
Proximal build height to alignment reference point23 mm23 mm23 mm23 mm
Min. distal build height with 2R57/2R67 tube adapter271 / 311 mm271 / 311 mm271 / 311 mm271 / 311 mm
Max. distal build height with 2R57/2R67 tube adapter476 / 516 mm476 / 516 mm476 / 516 mm476 / 516 mm
* The thread length is 9 mm.
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With the market launch of the Genium leg prosthesis, Ottobock opened up entirely new horizons for prosthesis wearers: a nearly natural gait pattern, climbing stairs step-over-step, walking backwards, relaxed standing – to name just a few examples. The benefits of being fitted with a Genium have been scientifically proven in multiple studies.The Genium has been enhanced based on human movement as the model. The result is a noticeably smoother gait and even better support and safety in everyday situations, for instance on ramps, in confined spaces or when changing walking speeds. Five individually selectable MyModes support special movement patterns at work or play. The Genium can be configured with the Cockpit app, which is now available not only for Android but Apple (iOS) devices as well.
With the market launch of the Genium leg prosthesis, Ottobock opened up entirely new horizons for prosthesis wearers: a nearly natural gait pattern, climbing stairs step-over-step, walking backwards, relaxed standing – to name just a few examples. The benefits of being fitted with a Genium have been scientifically proven in multiple studies.The Genium has been enhanced based on human movement as the model. The result is a noticeably smoother gait and even better support and safety in everyday situations, for instance on ramps, in confined spaces or when changing walking speeds. Five individually selectable MyModes support special movement patterns at work or play. The Genium can be configured with the Cockpit app, which is now available not only for Android but Apple (iOS) devices as well.