C-Leg | C-Leg | Knees - Microprocessor | Lower Limb Prosthetics | Prosthetics (2025)

The C-Leg 4 Update microprocessor knee

Choose the latest in proven performance

With over 100,000 fittings to date, the C-Leg is trusted by more users than any other microprocessor knee in the world¹. And it’s no wonder: Studies show the C-Leg provides the exceptional reliability and performance users need 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.

For Users

• New! IP68 rating! C-Leg is now even more durable than before and safe for occasional submersion in fresh water up to 3 meters for 1 hour²
• New! Manual locking function to conveniently secure the knee in extension via a simple tapping pattern
• Supported descent on ramps and stairs
• Improved stance release with short and quick steps
• Stumble Recovery Plus active at all times
• Increased support for sitting down
• Training function for stance release exercises!
• Choice between Intuitive and Deliberate stance
• More options for favorite activities with MyMode Plus
• Deep sleep mode to save battery
• Redesigned charger allowing one-handed operation
• Customizable shield cover
• Safe backward walking
• More reliable swing and stance phase control
• User customized functions via the Cockpit app for Android and Apple iOS
• Available in multiple colors as well as screw-top or pyramid adapter

For Professionals

• New! C-Leg 4 now has an app-based programming option for set-up by the professional. The new “connectgo.pro” app is compatible with both Apple (iOS) and Android devices. To learn more, please visit our “connectgo.pro” product page: https://shop.ottobock.us/connectgo.pro
• Training function for ensuring consistent stance release
• C-Soft Plus (Data Station PC based software) remains available for programming and support of the fitting process
• Delivered in Safety Mode until patient-specific data is entered. A recommendation is then provided.
• Standard 34mm, easily shortened tube adapters
• Access usage statistics when activated to see progress at each appointment
• Can be connected to an osseointegrated, percutaneous implant system*

1 Wismer, N., Mileusnic, M., Sreckovic, I., & Hahn, A. (2016). First results on next generation C-Leg. Poster presentation at OTWorld, Leipzig, Germany

2 Electronics are protected from dust, sand, dirt and occasional submersion in fresh water (up to 3m for 1hr). Mechanical components are not corrosion resistant.

* Verify that the manufacturer of the implant system and the manufacturers of the corresponding exoprosthetic components/adapters also permit this combination.

Learn more about:Clinical Evidence / Resources

Learn more about:IP Ratings and Ottobock MPKs