C-Leg 4
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.
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 type | Microprocessor |
| Mobility grade | 2, 3, 4 |
| Max. body weight | 136 kg |
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.
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.
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.
Getting the most out of your C-Leg has never been easier. Deep Sleep Mode helps conserve battery during long flights, camping trips, or any situation where power is limited. Charging is simple and convenient with a design that allows one-handed use, and a USB charging adapter ensures you can stay powered wherever you go.
A built-in training function provides real-time feedback after each successful swing phase initiation, helping users troubleshoot and improve their gait as they adapt to their prosthesis. This feature can be easily activated or deactivated by either the prosthetist or the user through the Cockpit app.
The new C-Leg 4 is now IP68, enabling you to have greater confidence in diverse environments. Whether you're walking the dog, caught in a rain shower, or accidentally splashed when watering the garden, you can be assured that the electronics in your C-Leg are protected from dust, sand, dirt and occasional submersion in freshwater (up to 3m for 1hr).
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.
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.
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.
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.
Users can choose between intuitive and deliberate stance with the help of their Prosthetist. 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.
The app connectgo.pro for Android and iOS smartphones and tablets makes it easy for Prosthetists to quickly and conveniently program the C-Leg for their users.
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.
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.
Product information
| Product type | Microprocessor |
| Mobility grade | 2, 3, 4 |
| Max. body weight | 136 kg |
| Amputation level | Hip disarticulation, Transfemoral amputation, Knee disarticulation |
| Material | Carbon |
Product Data
| Article number | 3C98-3=9.2-4 | 3C88-3=8.5-4 | 3C88-3=9.2-4 | 3C98-3=8.5-4 |
| Mobility grade | 2, 3, 4 | 2, 3, 4 | 2, 3, 4 | 2, 3, 4 |
| Distal connection | Tube clamp | Tube clamp | Tube clamp | Tube clamp |
| Proximal connection | Pyramid | Threaded connector | Threaded connector | Pyramid |
| Knee flexion angle | 130 ° | 130 ° | 130 ° | 130 ° |
| Moisture protection | IP68 (Water-resistant) | IP68 (Water-resistant) | IP68 (Water-resistant) | IP68 (Water-resistant) |
| Weight (without tube adapter) | 1250 g | 1255 g | 1255 g | 1250 g |
| Max. body weight | 136 kg | 136 kg | 136 kg | 136 kg |
| Colour | Desert pearl | Midnight Shadow | Desert pearl | Midnight Shadow |
| Minimum distal system height with 257/2R67 tube adapter | 289 / 329 mm | 289 / 329 mm | 289 / 329 mm | 289 / 329 mm |
| Max. distal system height with 257/2R67 tube adapter | 494 / 534 mm | 494 / 534 mm | 494 / 534 mm | 494 / 534 mm |
| Min. build height with 2R57/2R67 tube adapter | 294 / 334 mm | 294 / 334 mm | 294 / 334 mm | 294 / 334 mm |
| Max. build height with 2R57/2R67 tube adapter | 499 / 539 mm | 499 / 539 mm | 499 / 539 mm | 499 / 539 mm |
| Proximal build height to alignment reference point | 23 mm | 23 mm | 23 mm | 23 mm |
| Min. distal build height with 2R57/2R67 tube adapter | 271 / 311 mm | 271 / 311 mm | 271 / 311 mm | 271 / 311 mm |
| Max. distal build height with 2R57/2R67 tube adapter | 476 / 516 mm | 476 / 516 mm | 476 / 516 mm | 476 / 516 mm |
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