C-Leg Success Stories







Learn why the C-Leg is trusted, for good reason.

The Ottobock C-Leg is the original microprocessor knee. Since 1997, it has set the standard for every other microprocessor knee available. It’s also the world’s most studied prosthetic device, period.

Actively controlling and adapting to all aspects of your unique gait pattern and walking speeds, patented technology gives you the confidence, comfort, and safety you need to live an active quality life. With C-Leg, you have the freedom to focus on the world around you rather than on your next step. It’s no wonder why 94% of amputees who use C-Leg prefer it to their previous prosthesis*. Not all microprocessor knees are the same. Know the difference.

More fittings worldwide than any other microprocessor knee.

C-Leg has changed the lives of thousands of people just like you. To experience the difference, request your trial today.


The C-Leg 4 has an IP 67 rating, which protects it from damage due to incidental contact with or temporary submersion in fresh water. Because the C-Leg 4 is considered weatherproof, you don't have to worry while walking in the rain or using it around water.

Intuitive Stance

Available only in Ottobock microprocessor knees, Intuitive Stance automatically activates to fully block the C-Leg from bending or buckling while you are standing, allowing you to distribute your weight evenly between both legs. This helps alleviate pressure on your sound side and helps you maintain a more stable, comfortable position when standing for a long period of time, even on slopes or uneven terrain.

Backward Walking

The patented inertial motion unit (IMU) on the C-Leg provides stability when taking steps backwards or backing up. Contrast this to other manufacturer’s microprocessor knees, which do not accommodate backward walking, potentially causing their knees to collapse when stepping backward.

Stairs, Slopes & Ramps

The stance flexion feature in C-Leg provides hydraulic resistance against knee flexion (bending) mimicking the quadriceps muscle. This controlled knee flexion occurs early in the stance phase of your gait cycle while you are bearing weight on the prosthesis. Providing shock absorption, stance flexion allows you to securely walk up and down slopes and ramps, negotiate uneven / challenging terrain, and to descend stairs step over step.

Enhanced Stumble Recovery

With sensors that are always actively controlling and adjusting resistance while you are in the swing phase of gait, the C-Leg 4 can detect the pattern of movement that resembles a fall and will respond immediately by providing even greater resistance. This constant presence of swing flexion resistance paired with an immediate increase in resistance allows you to safely put your full weight onto your prosthesis so you can easily recover from a stumble and prevent a potential fall.

MyModes & Cockpit App

The Cockpit app allows you to adjust the C-Leg to your individual needs in everyday life using an iOS or Android device. With the cockpit app, you can check your C-Leg’s battery life, determine your daily step count, or select preconfigured MyModes for specific activities like biking or golfing.


Prepare for your Trial

Prepare for Your Trial

Trying out a new prosthetic device can be an exciting occasion for individuals living with limb loss. It can also be a little intimidating if you’re not quite sure what to expect. Watch our trial preparation video to better understand the process so you’ll be ready to experience the advanced features the C-Leg has to offer.

Trial Checklist

Trial Checklist

Prepare for your C-Leg trial using this checklist to review the steps you can take to ensure a successful trial. The C-Leg is designed for users with knee disarticulation, transfemoral amputation and hip disarticulation, for unilateral or bilateral amputation.

Download our trial prep checklist

Reimbursement 101

Reimbursement 101 Video Series

The financial aspect of healthcare can be confusing and complex. This short series is designed to remove some of the mystery and offer practical tips. Hosted by Kimberly Hanson, Ottobock’s Director of Reimbursement, and Aaron Holm, the Manager of Consumer Engagement.

Watch the rest of our Reimbursement 101 Video Series

*Kannenberg, A., Zacharias, B., & Pröbsting, E. (2014). Benefits of microprocessor-controlled prosthetic knees to limited community ambulators: systematic review. Journal of rehabilitation research and development, 51(10), 1469.