C-Brace® Orthotronic Mobility System

A leg brace for people living with partial paralysis, spinal injury, post-stroke and post-polio syndrome

Custom electronic leg brace

The C-Brace® Orthotronic Mobility System is a computer controlled orthosis and an entirely new approach to walking when back injuries or leg muscle weakness limit you. Instead of a locked knee brace - or a wheelchair - imagine a system that gives you the freedom to participate in many daily activities. Walk all day, walk smoother, walk with confidence and greater safety.

Interested in the C-Brace? Book an assessment at one of our Private Clinics.

Integrated information

The built-in ankle moment sensor captures information and sends it to the microprocessor to be analyzed. The microprocessor uses this information to optimize the resistance of the brace in real time to best support you.

Fits your form

The shape of the calf shell is based on a cast so it matches your shape.

Measures your motion

A knee angle sensor built into your orthosis gathers data about your movements so the C-Brace microprocessor can respond to keep your walking stable and secure.

Adapts automatically

The microprocessor controlled C-Brace, unlike traditional locking knee joint systems, makes sure it is stable when you need it, and swings freely when you are ready to take a step.

Custom fit to you

A lightweight carbon fiber thigh shell is shaped to fit you.

What you need to know

Advantages for you

Out of her wheelchair

Christin depends on her C-Brace to measure and respond to her movements – even when she’s out searching for new horizons. On rough terrain, Christin can depend on the C-Brace to help keep stumbles from turning into falls. To learn more about gait, read our page Stance Control Orthotics Explained.


If crowds and unpredictable sidewalks and floors can challenge you, the C-Brace can help make your journey a little smoother. Changing speed and direction is easier when you can put weight on a bent knee. And, the idea of “orthotronics” means you have the combination of electronic and mechanical systems working together to support your every step. To learn more, visit our page The Future: Orthotronic Mobility Science.

Walk with confidence again

The C-Brace is a new approach to walking, and it will take some time to re-learn the motions of walking (gait). The people who have benefitted the most from this advanced orthotic have taken the time to learn to trust that the C-Brace will respond when you need it – and to get back to a normal walking pattern. To find out if the C-Brace is suitable for you, please book an assessment at one of our clinics.

Custom made to you

The C-Brace is custom made for each unique user - and can even be made to accommodate heavy duty users. But with our C-Brace diagnostic tool - which can be adapted to most legs - you can try out C-Brace support for yourself. The diagnostic tool helps us to explain the differences between your current brace and this new, computer controlled orthosis. To find out more about the C-Brace or to book an assessment, please contact one of our clinics.

Technical info

Your clinical needs are unique to you and involve knowing the challenges of your workplace, your home, and your hobbies. Our orthotists are well-equipped to help you assess your situation and determine what might work for you. Ottobock has expereinced clinicians who can talk about all the clinical details involved in your decisions, and are happy to personally consult with you about your case.


The C-Brace orthotronic mobility system can be considered for all neurological indications of the lower limbs. The primary indications include:

  • Lower limb involvement with weakness or paresis of the quadriceps muscle or the inability to maintain knee extension during stance phase, e.g. incomplete paraplegia with segmental levels of L1 to L5 or polio, post‑polio syndrome


  • Moderate to severe lower limb spasticity
  • Hip flexor strength of less than grade 3. Ability to advance the limb by compensatory trunk movement is permitted
  • Fixed knee valgus greater than 10 degrees beyond anatomic neutral
  • Fixed knee varus
  • Less than 2 degrees of relative ankle dorsiflexion
  • Body weight over 125 kg/275 lbs


User Brochure

C-Brace User Brochure

C-Brace components at a glance

C-Brace components at a glance

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