Discover the new C-Leg 4 Microprocessor Knee.
C-Leg: Trusted for good reason.
Since 1997, one particular microprocessor knee has set the standard for every other available option. Now, with the new C-Leg 4, our signature knee is raising the bar even higher.
It’s the one patented technology that empowers you with the proven performance you need to live the healthy, active life you want. C-Leg adapts to your unique gait pattern and walking speeds, so you can keep your focus where it matters — not on your next step, but on where you want it to take you.
It’s the world’s most studied prosthetic device. Full stop.
Up to 90%
of C-Leg users prefer it to their previous mechanical prosthesis*
of continuous microprocessor knee development and user input have led to the new C-Leg 4.
fittings have helped more users regain their mobility than any other microprocessor knee.
Patricia, office assistant
With C-Leg, I’m living again - traveling, working, taking care of my home and family. I feel good!
Royal, estate agent
With C-Leg, I’ve started a new chapter in my life. I used to be shy about my prosthetic leg, but now I feel strong and confident.
Why do more people choose C-Leg than any other microprocessor knee?
C-Leg has changed the lives of thousands of people just like you — and many of them have shared their stories with Ottobock. Discover how our technology has empowered them to achieve the life they want.
I’ve always had a burning desire to do something positive with my life.
As a kid, Rebecca tried to hide her limb difference. But as her awareness of other people like her grew, she realised it was ok to embrace being different. She’s always looking to challenge herself and inspire others as she participates in a variety of activities with her C-Leg.
Discover how C-Leg 4 supports your active day-to-day life.
With its innovative design and exciting new features, C-Leg 4 provides a highly personalised user experience that helps you move more easily through your day and stay focused on what matters most to you.
New Colour Option
Many updates to our signature C-Leg Microprocessor Knee are based on feedback we received directly from C-Leg wearers. That’s why the C-Leg 4 is available in the original lighter Desert Pearl colour as well as a new darker shade, Midnight Shadow, which is a deep gun metal grey colour.
NHS Microprocessor Knee Funding.
Ottobock have been proudly providing the C-Leg 4 to individuals through the NHS since 2016, empowering them to thrive and live the active life they choose. Learn more about the policy and discover real-life stories from users who have benefited from their C-Leg.
Take a closer look.
The C-Leg's legacy lives on, discover some of the new exciting and innovative features of the updated C-Leg 4 microprocessor knee in detail.
Frequently asked questions about the C-Leg 4.
*Kannenberg, A., Zacharias, B., & Pröbsting, E. (2014). Benefits of microprocessorcontrolled prosthetic knees to limited community ambulators: systematic review. Journal of Rehabilitation Research and Development. 51(10), 1469-96.
Orendurff, Michael S.; Segal, Ava D.; Klute, Glenn K.; McDowell, Martin L.; Pecoraro, Janice A.; Czerniecki, Joseph M. (2006): Gait efficiency using the C-Leg. In: Journal of rehabilitation research and development 43 (2), S. 239–246.
Hafner, Brian J.; Willingham, Laura L.; Buell, Noelle C.; Allyn, Katheryn J.; Smith, Douglas G. (2007): Evaluation of function, performance, and preference as transfemoral amputees transition from mechanical to microprocessor control of the prosthetic knee. In: Archives of physical medicine and rehabilitation 88 (2), S. 207–217. DOI: 10.1016/j.apmr.2006.10.030.