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.
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 |
Proven performance at every step
The key to fluid movement is a knee that responds quickly to different inclines and surfaces. With the new C-Leg 4, users get improved stance release and increased support for descending ramps and stairs, enabling noticeably smoother and more reliable movement.
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.
Now 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. A redesigned charger enables one-handed use. Plus, there’s a USB charging adapter available.
A new 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.
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.
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 now available in two colors: the original lighter Desert Pearl as well as a new 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 life, set their volume, track their activities, perform a knee joint self-test if needed, and much more — all via their iOS or Android smartphone.
With their prosthetist’s help, users can choose between intuitive and deliberate stance functions. Intuitive stance uses subtle cues to detect whether users need support for standing or taking a step, while deliberate stance requires more conscious movements to resume flexion.
Featuring C-Soft Plus 1.10 software, the new C-Leg 4 offers even more preset options and video tutorials to assist professionals and users throughout the fitting process.
C-Leg users enjoy healthy, active lives
Georg’s C-Leg 4 Story
Georg maintains an unwavering positive attitude toward life. In fact, he believes his amputation has created new possibilities for him, such as realising his childhood dream of skiing, discovering a passion for the javelin, and becoming a para-athlete. Watch the video to see how the C-Leg 4 supports him during sports, daily routines, and everything in between.
Rebecca’s C-Leg 4 Story
Rebecca loves to express creativity in every facet of her life. Thanks to the new custom shield insert for her C-Leg 4, her unique style and personality are always on display for the world to see. Watch the video to see how the C-Leg 4 keeps Rebecca focused on what really matters — not every step she takes, but rather where each step will take her.
See why more users trust C-Leg
Intelligent system
Reliability
Elegance
Thanks to innovative new developments, C-Leg 4 users enjoy more harmonious, fluid movement patterns — even when taking small steps, changing walking speeds, or navigating different types of terrain such as sand, grass, and gravel. Even users who have never worn a C-Leg are able to adjust to the prosthesis over a relatively short period of time.
Safety
Many studies have proven that users fall significantly less frequently with the C-Leg than with conventional prostheses, making the C-Leg one of the most reliable leg prostheses in the world. In addition, the new C-Leg 4 provides even greater safety and stability via Stumble Recovery Plus and increased support for sitting down.
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 | 3C88-3=8.5-2 | 3C98-3=8.5-2 | 3C88-3=9.2-2 | 3C98-3=9.2-2 |
| 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 | Threaded connector | Pyramid | Threaded connector | Pyramid |
| Knee flexion angle | 130 ° | 130 ° | 130 ° | 130 ° |
| Moisture protection | IP67 (weatherproof) | IP67 (weatherproof) | IP67 (weatherproof) | IP67 (weatherproof) |
| Weight (without tube adapter) | 1255 g | 1,250 g | 1255 g | 1,250 g |
| Max. body weight | 136 kg | 136 kg | 136 kg | 136 kg |
| Colour | Midnight Shadow | Midnight Shadow | Desert pearl | Desert pearl |
| Proximal system height to alignment reference point | 26 mm | 5 mm | 26 mm | 5 mm |
| 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 | 297 + 9* / 337 + 9* mm | 294 / 334 mm | 297 + 9* / 337 + 9* mm | 294 / 334 mm |
| Max. build height with 2R57/2R67 tube adapter | 502 + 9* / 542 + 9* mm | 499 / 539 mm | 502 + 9* / 542 + 9* mm | 499 / 539 mm |
| Proximal build height to alignment reference point | 26 + 9* mm | 23 mm | 26 + 9* 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 |
Documents
Answers for you
Compatible accessories
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