New C-Leg 4 Microprocessor Knee | Choose Proven Performance

Key features

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 personalized user experience that helps you move more easily through your day and stay focused on what matters most to you.

A man stands in the grass wearing his C-Leg 4 in the new Midnight Shadow color

New color option

Many updates to our signature C-Leg Microprocessor Knee are based on feedback we received directly from users. That’s why you can now get the C-Leg 4 in the original lighter Desert Pearl color as well as a new darker shade, Midnight Shadow.

Know the difference

C-Leg: Trusted for good reason.

Since 1997, one microprocessor knee technology has set the standard for every other available option. And now, with the newest 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.

Proven performance

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*

25 years

of continuous microprocessor knee development and user input have led to the new C-Leg 4.

100,000

fittings have helped more users regain their mobility than any other microprocessor knee.

Get a closer look

See some of the new features of the updated C-Leg 4 microprocessor knee in detail.

C-Leg success stories

Learn why 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.

The C-Leg has improved my life tremendously.

After losing his leg in a motorcycle accident, Brandon recovered from the traumatic experience with the support of his family, friends, and fraternity brothers. He went on to found The Mind Clothing, a fashion brand that harnesses his unwaveringly positive spirit.

In his C-Leg 4, Brandon leans on a rail overlooking water and the city

My life was more restricted before the amputation than now.

Georg maintains an unwavering positive attitude toward life. In fact, he believes his amputation has created new possibilities for him, such as realizing his childhood dream of skiing, discovering a passion for the javelin, and becoming a para-athlete. The C-Leg 4 supports him during sports, daily routines, and everything in between.

Georg relaxes in the grass with three children in his C-Leg 4

The C-Leg has improved my life tremendously.

After losing his leg in a motorcycle accident, Brandon recovered from the traumatic experience with the support of his family, friends, and fraternity brothers. He went on to found The Mind Clothing, a fashion brand that harnesses his unwaveringly positive spirit.

With C-Leg, I was able to pursue an athletic career.

Born with a limb difference, Amy shied away from sports while growing up. But after college, she discovered a passion for athletics. Now, she regularly participates in fitness competitions and calls herself a competitive adaptive athlete.

Amy stands on her C-Leg 4 as she kicks a heavy bag with her other leg

I describe myself as strong-willed - made of steel.

After losing her leg in a bombing that struck her home in Syria, Dima began her journey to recovery on crutches. She’s come a long way since then, and now enjoys a healthy active lifestyle with her C-Leg 4.

Dima poses exuberantly in front of an outdoor sculpture in her C-Leg 4

With C-Leg, I live a full, active life as a father, non-profit leader, and musician.

Billy is a drummer at heart. But after losing his leg to cancer, he now leads the Steps of Faith Foundation to help people with limb differences get the prosthesis they need. With his C-Leg 4, Billy is as active as ever, playing drums whenever he can and hanging out with his two kids, all while serving the greater amputee community.

Billy Brimblecom poses in a bionic leg in front of a colorful mural

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 realized 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.

Rebecca does yoga in the park in her C-Leg 4 Microprocessor Knee

I’m still the same person — just with a special accessory.

Rebecca loves to express creativity in every facet of her life. With the new custom shield insert for her C-Leg 4 guard and protective cover, Rebecca’s unique style and personality shine through with each step she takes.

Rebecca goes for a walk in her C-Leg 4 Microprocessor Knee

My life was more restricted before the amputation than now.

Georg maintains an unwavering positive attitude toward life. In fact, he believes his amputation has created new possibilities for him, such as realizing his childhood dream of skiing, discovering a passion for the javelin, and becoming a para-athlete. The C-Leg 4 supports him during sports, daily routines, and everything in between.

The C-Leg has improved my life tremendously.

After losing his leg in a motorcycle accident, Brandon recovered from the traumatic experience with the support of his family, friends, and fraternity brothers. He went on to found The Mind Clothing, a fashion brand that harnesses his unwaveringly positive spirit.

Previous slide

Next slide

FAQ

FAQ C-Leg 4

What benefits of the C-Leg have been proven in clinical trials?

Numerous studies have investigated the advantages of C-Leg technology for people with a transfemoral amputation. These studies have shown that the frequency of falls is much lower with the C-Leg compared to conventional prostheses, proving a high level of safety.

In addition, studies show that C-Leg users don’t have to concentrate on their prosthesis at all times, but rather can move more freely in everyday situations. C-Leg users have more confidence in their prosthesis, and are also able to boost their activity levels, vary their walking speed and expend less energy while walking.

*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.

Discover the new C-Leg 4 Microprocessor Knee.

Discover how C-Leg 4 supports your active day-to-day life.

C-Leg: Trusted for good reason.

It’s the world’s most studied prosthetic device. Full stop.

Up to 90%

25 years

100,000

Get a closer look

See if C-Leg 4 is right for you.

Learn why more people choose C-Leg than any other microprocessor knee.

FAQ C-Leg 4

What benefits of the C-Leg have been proven in clinical trials?

Where can I get a C-Leg?

Where can I try out a C-Leg?

What’s included in a prosthetic fitting?

What happens when the battery is drained?

Can I take a shower or go swimming with the C-Leg?

How long does it take to learn how to use the C-Leg?